居合術 iaijutsu
居合術 (iaijutsu) names the art of drawing the sword, followed here from a domain office's records to the Butokukai's titles and into English.
Abstract
居合術 (iaijutsu) puts 術, art, on 居合 (iai), the old name of the art of drawing the sword and cutting in one act, and in the sources read here the suffix is first the word of record-keepers, compilers and an association writing of martial practice at large: the titles the national catalogue of early books dates, from 1630 to 1840, write 居合 with no 術; the earliest dated 居合術 in the National Diet Library's full-text search of its digitized classical books is in the records of the Tsushima domain's office at the Japan House in Busan in 1848; and in 1890 the Ministry of Education's survey of the old domain schools prints 居合術 in a list of Tosa's subjects that it does not mark as the original, where the Tosa rules of 1867 and 1868 that it does mark write 拔刀. By 1910 the Dai Nippon Butokukai gave its titles in 居合術 while it already wrote 劍道 and 柔道 for the sword and unarmed fighting; in 1918 a chapter co-edited by the head of the Tosa line counted 居合術 among the 劍道, used in general to cultivate body and mind; and the name held in the association's titles in 1941 and in common use until 居合道 settled in its place from about the mid-1950s. The first source read here to set the two names against each other is a manual of 1938, which chose 居合道 over 居合術 to name a cultivation of the spirit; English took iaijutsu in the 1960s, and in 1973 Donn F. Draeger drew a parallel line in English, making iai-jutsu the combative art of the warriors before the Edo period and iai-do the discipline of spiritual cultivation, and told the art's history as a passage from the one to the other.
Overview
The sense. The name of a martial art, in the standard language, and an older name than the one in use today. Of the dictionaries read here, only 日本大百科全書 (ニッポニカ) heads an article 居合術, read いあいじゅつ, and it defines the art: 《居合は立合(たちあい)に対する語で、敵と居合わせるや、腰の扱いですばやく刀を抜き放ち、わが身を守り敵を制する操刀の術をいう。》, 居合 is a word set against 立合, the standing bout: the art of handling the sword in which, finding oneself with an enemy, one draws the sword swiftly by the work of the hips, to protect oneself and master the enemy [1]. 精選版 日本国語大辞典, in its article 居合, defines the art as 《片膝をついたまますばやく刀を抜いて敵を切るわざ。》, the technique of drawing the sword swiftly from one knee and cutting the enemy, and ends the sense with two other words for it, 《居合い抜き。居合い術。》, writing the second with the kana い; デジタル大辞泉 enters 居合 alone [2], and JMdict enters 居合, art of drawing one's sword, cutting down one's opponent and sheathing the sword afterwards, and 居合道, and has no entry 居合術 [3]. English has no word of its own for the art; it describes it or borrows the Japanese, as the history of 居合道 sets out [4]. What English has borrowed in iaijutsu is a word for the classical schools of the art, set against iaido, its modern practice, and the English section below follows how that pairing came about.
The words. 居合 (いあい) is the art, a word set against 立合 and first known in a license of 1579, written 居相; its first character is read by the dictionaries both as sitting and as being present, and its history is told in the history of 居合道 [4]. 術 (jutsu) is a technique or an art, the suffix of 剣術 (kenjutsu), 柔術 (jūjutsu), 弓術 (kyūjutsu) and 槍術 (sōjutsu). ニッポニカ gives the art's other names: 抜刀, read いあい, 居相, 座合, 抜合, 抜剣, 利方 and 鞘の内 [1]. 居合術 is 居合 with 術; 居合道 (iaidō) is 居合 with 道, way, and replaced it [4]. What the three characters mean is plain. The question this history follows is who put 術 on 居合, when, and what English made of the pair 居合術 and 居合道.
The text in English. The bilingual dictionaries read for 居合道, Brinkley's of 1896 and Kenkyūsha's of 1939, head iai [4], and JMdict has none today [3]. English print has iai-jutsu from 1963 and iaijutsu from 1964 in the rows of the Internet Archive's full-text search read or dated here, one unopened row of 1950 apart, and Draeger's two volumes of 1973 set out the sense the later English accounts read here follow, as the section below shows.
The historical record
1630 to 1840, the dated catalogue titles. The national catalogue of early books, 国書データベース, lists eighty-six works with 居合 or 居相 in their titles. The fifteen the catalogue dates, from 一伝流居合之序, dated 寛永 7 (1630), to 斉敏公田宮流居合免巻, a license of the Tamiya school 田宮流 dated 天保 11 (1840), write 居合 with no 術; not all are the schools' own books, for they include 軽口居合刀, printed in 宝永 1 (1704), and three records of 居合之諸士, the samurai present [5]. Three titles, none dated, carry 術: two read 居合術, and the third, 自弁流居合剣術免許状, reads 居合剣術; the catalogue records one of the two, 民弥流居合術, as a copy, under 武徳会, of a copy held by the Koga family, 古賀家蔵本写 [5]. A catalogue title is a cataloguer's until the book is read, and these books are not read here; as dated titles, they write 居合.
1848 and 1854, the diary of the keeper of the Japan House at Busan, 館守日記. The records of the house of Sō 宗, lords of Tsushima, who conducted Japan's relations and trade with Korea in the Edo period, are held by the National Diet Library as the 宗家文書, mostly the records of the Japan House, 倭館, at Busan, and are an Important Cultural Property [6]. In a volume of the keeper's diary for the fourth to sixth months of 嘉永 1 (1848), an entry on a man's diligent service notes above all his progress in the art: 《就中居合術上達ニ付而》, above all, as to his progress in 居合術 [7]. A volume of 嘉永 7 (1854) praises a man 《居合術熟達之人ニ而壮年之》, being a man accomplished in 居合術, and in his prime [8]. The entry of 1848 is the earliest dated 居合術 in the National Diet Library's full-text search of its digitized classical books. Here 居合術 is the word of an office writing of the samurai in its charge.
1863 to 1866, the register of the same office, 惣目録. Two items of the register, of the months 文久 3 to 慶応 2, concern the samurai on station, the first naming them 在館侍中, at the house, and their practice: 《居合術稽古用》, for practice in 居合術 [9]. The office wrote the word from the 1840s into the 1860s.
1885–86, 大日本人名辞書, a biographical dictionary. Telling of the founder of the 谷派, the Tani school, the dictionary has him say after a dream: 《吾家傳ふる所の居合術ハ今より號を改めて谷派と號せん如何ん》, the 居合術 our house hands down, shall we from now change its name and call it the Tani school?, and names its source after the story as 谷派劍術記, a record of the school [10]. The words stand in the dictionary's Meiji prose; whether 居合術 is the record's word or the compiler's, the page does not show.
1890, 日本教育史資料, the Ministry of Education's survey of education before the Restoration. For the domain of Sabae 鯖江, the survey's unmarked narrative, after noting that the domain's notices are lost, tells how each year the teachers of the martial arts were gathered with the rest to hear the school's opening lecture, all in formal dress, 《何レモ禮服ヲ着ス》, 《槍劍柔術小具足術居合術弓術木馬等ノ稽古塲其校內ニ設置セルヲ以テナリ》, for practice grounds for the spear, the sword, 柔術, 小具足術, 居合術, 弓術, the wooden horse and the rest had been set up within the school [11]. For Tosa 土佐, the survey says that, the rules having changed often, it gives first those set at the school's opening, 《首ニ開館ノ時定ムル所ノ規則ヲ擧ケ》, and the list headed 科目 that follows, which it does not mark as the original, reads 《經學、史學、國學、句讀、槍術、劒術、弓術、砲術、士官學、生兵學、練兵、馬術、要馬術、居合術、體術、貝、太皷》 [11]. The rules it then quotes marked 《原文ノマヽヲ錄ス》, set down as in the original, write otherwise: the opening's rule on the terms of study has the students learn 《槍劍》 and leaves 《其餘ノ藝術》, the other arts, to their wish, and in the rule of the twelfth month of 慶應 3 (1867) the art is 拔刀: 《九ツ時ヨリ七ツ時迄槍術、劒術、拔刀、組討、軍馬術》, from the ninth hour to the seventh, the spear, the sword, 拔刀, grappling, war horsemanship; a rule of the fifth month of 明治 1 (1868) suspends 《槍術、兵學、軍太鼓、拔刀、組打》, the five arts [11]. For Yunagaya 湯長谷, a domain of Iwaki, the survey writes of the lord in whose time the school was founded, in 天保 14 (1843), that he 《本館ニ於テ自ラ居合術ノ敎師タリ》, was himself the teacher of 居合術 in this school [12]. Where the survey marks Tosa's own words, the rules of 1867 and 1868 write 拔刀, a name ニッポニカ reads いあい [1]; 居合術 stands in the list it does not mark, and whether that is the opening rule's word or the compiler's, the page does not say. For Sabae and Yunagaya the word stands in the survey's unmarked narrative.
1910, the Dai Nippon Butokukai's titles. The national association of the martial arts, founded in 1895, has a section in the Kyoto prefecture's account of the 行啓, a visit of the imperial family, of 1910, printed in 1911, which gives the association's classes with their numbers of students, 《劍術科 內薙刀 柔術科 弓術科 游泳科》, and the present holders of its titles of 範士 and 教士: 《劍道範士 十名 槍術範士 二名》, then 《弓術範士 四名 居合術範士 一名 柔道範士 六名 游泳術範士 一名》, and among the 教士 《居合術教士 一名》 [13]. The classes still said 劍術 and 柔術, while the titles said 劍道 and 柔道 for those two arts and 術 for the spear, archery, the halberd, swimming and 居合 [13]. The association had printed 剣道 titles from 1909, as the history of 剣道 sets out [14]; 居合術 sat on the 術 side from its first appearance among the titles read here.
1918, Ōe Masaji 大江正路 and Hotta Sukehiro 堀田祐弘, a chapter in a book on the sword. Hotta Sutejirō 堀田捨次郎's 剣道手ほどき, a first lesson in kendō, in the revised second printing of 1918, carries as its appendix 《無雙直傳英信流居合術の由來》, the origins of the 居合術 of the 無雙直傳英信流, edited jointly, 共編, by the two men, each signing as 教士 [15]. It opens: 《我國で武道と申すものは弓馬槍劍の道であります。此道の中で今日では劍道が一般に亘つて心身を修養する事に用ゐられて居りますが、玆に謂ふ居合術は即ち劍道の一つで》, what our country calls the martial way is the way of the bow, the horse, the spear and the sword; among these ways, 劍道 is used today in general to cultivate body and mind, and the 居合術 spoken of here is one of the 劍道 [15]. It goes on that 居合術 is done with a live blade, and that at each cut 《攻撃的精神が充溢して居る》, the spirit of attack is full [15]. It traces the line from 《林崎神助重信》 to 《十七代大江正路》, its seventeenth head, and says 《此居合術は昔し土佐藩に起り》, this 居合術 arose of old in the domain of Tosa [15]. Fifty years after the domain's rules wrote 拔刀, a chapter co-edited by the head of the Tosa line writes 居合術 for the art, with its live blade and its spirit of attack, and counts it among the 劍道 used to cultivate body and mind; its running prose keeps 居合 for the act itself, 《居合の拔き付け》, the draw-and-cut of 居合 [15].
1919, the renaming of three arts. In 1919, in the account of Nakamura Tamio 中村民雄, the editor of a compilation of the association's records, known here from the full-text search's snippets, the Butokukai told its branches that 剣術, 柔術 and 弓術 would be called 剣道, 柔道 and 弓道, as the history of 剣道 sets out [16][14]; he adds: 《もちろん、それ以外の種目は旧称の「術」のままであった。》, the other arts, of course, kept the old name in 術 [16]. The sentence does not name 居合術; ニッポニカ dates Nakayama Hakudō 中山博道's title 居合術範士 to 1920, the year after [1].
1918 to 1942, books titled 居合術. In the National Diet Library's catalogue, the earliest dated book among the title records with 居合術 is Hotta's of 1918, by its catalogued subtitle 附英信流居合術詳解 [17]. A book titled 居合術 alone is recorded for 1932; the Navy's two schools issued 劍道參考書 : 居合術 and 立居合術心覺 in 1933 and 居合術 短劍術 in 1941; and the schools' manuals keep the word into 1942 [17]. The first book with 居合道 in its title in the same catalogue is of 1939, though the word is in print by 1933 [4]. These are the titles of one union catalogue, and a book catalogued under another title is not in them.
1933 to 1941, the Butokukai's count. ニッポニカ gives the association's holders of titles in the art at the time Nakayama arranged his forms, in 1933, 《当時》, as one 居合術範士, Nakayama, thirty-one 教士 and sixty-three 練士, and in March 1941 as 《居合術の称号所有者数は、範士2、教士50、練士178、計230名》, the holders of titles in 居合術: two 範士, fifty 教士, 178 練士, 230 in all [1]. By 1943 the association's own titles say 居合道達士 [4].
1938, the two names set against each other. The first source read here to set 居合術 and 居合道 against each other is a manual of 1938, 図解居合詳説, by Yamanouchi Toyotake 山内豊健 and Tanida Saichi 谷田左一, whose fifth chapter, 居合術と居合道, argues for the new name on the ground that the way is 《物心一如の界》, the realm where body and mind are one: 《敢へて居合道と呼んで、居合術と呼ばない理由は、以上に基くのである》, this is why we call it 居合道 and not 居合術; a later chapter names the aim as 《精神の修養であり、人格の完成》, the cultivation of the spirit and the perfection of character, as the history of 居合道 sets out from the full-text search's snippets [4]. An article of 1933 on the Tosa school, which opens on the study of 居合術, had used 居合道 of that school's whole way of the art [4], and the Tosa chapter of 1918 had counted 居合術 among the 劍道 used to cultivate body and mind [15]. The manual's is an argument for a name on the ground of the spirit; the history of 居合道 reads it as naming a cultivation rather than a technique, and as the distinction Draeger would draw in English [4].
1954 to 1956, the new name settles. After the war the All Japan Iaidō Federation, 全日本居合道連盟, was founded in May 1954 and set five common forms in October 1956, and ニッポニカ dates from these years the change of name: 《このころから居合術にかわって居合道の名が定着してきたといえる》, it can be said that from about this time the name 居合道 settled in place of 居合術 [1]. The encyclopedia says about this time and it can be said; it gives no witness for the change.
What is not a source. Three documents appear in the National Diet Library's catalogue with 居合術 in their titles, two of them dated, a license of 明和 9 (1772) and a license list of the 竹内流 of 天保 9 (1838); the catalogue gives the first title in square brackets, its mark of a title it supplied, and none of the three is read here, so they are not witnesses for the word in the 1770s or the 1830s [17]. A record of 1885 in the same catalogue, 居合術高畠氏の流祖150回忌追善稽古を計画, carries a title that summarizes a document not read here [17]. The English Wikipedia says that the term "iaijutsu" was first verified in connection with Iizasa Chōisai Ienao (c. 1387 – c. 1488), founder of the Tenshin Shōden Katori Shintō-ryū [18]; Draeger's sentence of 1973, the Tenshin Shoden Katori Shinto Ryu developed the first iai-jutsu that can be historically verified, is about the art [19], and the earliest dated 居合術 in the National Diet Library's full-text search of its digitized classical books is of 1848 [7].
The word in English
1963, Roald M. Knutsen, Japanese Polearms. ones are still in use in the arts of Kendo and Iai-jutsu to this day [20]. It is the earliest iai-jutsu in a book read or dated here, in the Internet Archive's full-text search; one row of that search dated 1950, Iai-Jutsu. The art of drawing and cutting, inside a monograph on musical ability, was not opened. The bilingual dictionaries before the war head iai [4].
1964, The New Official Guide: Japan. Compiled by the Kokusai Kankō Shinkōkai and published by the Japan Travel Bureau: In the subsequent centuries, many schools of iaijutsu were founded [21]. The word closed up, as a name for the old schools.
1969, Donn F. Draeger, Asian Fighting Arts. this defensive characteristic that distinguishes iai-jutsu from kenjutsu; and Though always secondary in importance to kenjutsu, iai-jutsu, nevertheless placed a high emphasis on spiritual, where the search window ends [22]. Four years before Draeger divided the two words, his iai-jutsu itself placed a high emphasis on spiritual, as far as the window goes.
1973, Donn F. Draeger, Classical Bujutsu and Classical Budo. The first of Draeger's two volumes sets iai-jutsu among the combative arts of the classical warrior: Iai-jutsu, or sword-drawing art, made it possible for the bushi to develop the power to triumph over mere violence. This art is essentially a defensive one; More than four hundred ryu consider iai-jutsu within their curricula [19]. The second, under the head From Iai-jutsu to Iai-do, draws the line: The designation of "sword-drawing technique" as a distinct budo form, iai-do, was made only in the twentieth century. But the essence of iai-do, a noncombative discipline engaged in for the individual's spiritual cultivation, is clearly a product of Edo-period thought. Iai-jutsu, the classical sword-drawing art practiced for combative purposes, was contained in the curricula of hundreds of martial traditions that existed prior to the Edo period [23]. Two words are made to carry two things, combat and cultivation, and the art's history is told as a passage from the one to the other. A line between the two names had been argued in Japanese by the manual of 1938, on the ground of the spirit [4]; Draeger's runs parallel to it, and nothing read here shows that he took it from the manual. What his adds is the history, setting iai-jutsu before the Edo period and the essence of iai-do in it. The Japanese sources read here from before the late 1930s do not divide the practice between the two names: the dated titles write 居合, the office at Busan, the survey and the Butokukai wrote 居合術, and in 1918 the Tosa chapter counted 居合術 among the 劍道 used to cultivate body and mind [5][7][11][13][15].
1973, Oscar Ratti and Adele Westbrook, Secrets of the Samurai. The same year, the same story: Kenjutsu, the art of the sword, for example, was further refined into a deadly specialization known as iaijutsu—the art (jutsu) of drawing (iai) and simultaneously cutting with the sword, and later the discipline was expanded and refined until it entered the spiritual and religious dimensions of man's existence and, as such, became known as iaido, the way of iai [24].
1998, G. Cameron Hurst III, Armed Martial Arts of Japan. The late Donn Draeger's discussion of martial arts terminology is widely accepted by Western practitioners of martial arts, Hurst writes, and Draeger distinguishes between terms far more sharply than do the authors of traditional Japanese texts; Tokugawa martial arts texts seldom contain references to do forms. Nor do they distinguish clearly between jutsu and do forms [25]. His correction is general and names no history for any word of 居合; the record of this word read here, 居合 in the dated titles, 拔刀 in Tosa's rules, 居合術 from 1848 and no 居合道 before 1933 [4], is consistent with it. In his list of the eighteen martial arts he writes battōjutsu, or iaijutsu (drawing the sword); his note on the list traces the term for the eighteen arts, like the concept, to a Ming Chinese original [25].
2015, Alexander C. Bennett, Kendo: Culture of the Sword. Of the renaming of 1919: Nishikubo Hiromichi … announced the change, declaring that bujutsu would be referred to thereafter as budō, kenjutsu as kendō, jūjutsu as jūdō, and so on [26]. For 居合 the and so on goes too far: in Nakamura's account the association named three arts and the others kept 術, and its titles in 居合術 were still counted in 1941 [16][1]. Bennett also writes of his own training in Hōki-ryū iaijutsu, the scholar-practitioner's use of the word for a classical school today [26].
Today. The English Wikipedia gives Draeger's line as a common distinction, describing iaijutsu as a classical sword-drawing art practiced for combative purposes, while regarding iaidō as a discipline oriented more toward personal and spiritual cultivation, and qualifies it with the schools whose seated forms do not fit [18]; the Japanese Wikipedia says that, in ideas and in technique, no clear boundary exists between 居合道 and 居合術, and that the Butokukai called the art 居合術 [27]. The design is sold as Iaijutsu, with the line the art of drawing the sword. This history's gloss is the same: it gives what the dictionaries say the art is, drawing the sword and cutting with it, and keeps art for 術 [1][3].
A reading
The usual English account makes 居合術 and 居合道 two things, the combative art of the classical warrior and its spiritual descendant [24][18], and Draeger dates the passage from one to the other to the Edo period in essence and to the twentieth century in name [23]. The sources read here give the word a different history. The dated titles write 居合, and Tosa's rules 拔刀 [5][11]; 術 was put on it, in what is read here, first by those who wrote about many arts at once: the office at Busan that kept account of its samurai, the Meiji dictionary and the Ministry's survey, and the Butokukai, whose titles in 1910 already said 劍道 and 柔道 and still said 居合術 [7][10][11][13]. In 1918 a chapter co-edited by the head of the very line whose domain had written 拔刀 wrote 居合術 for the art, with its live blade and its spirit of attack, and counted it among the 劍道 used to cultivate body and mind, a year before the Butokukai, in Nakamura's account, renamed three arts and left the others in 術 [15][16]. Wada Tetsuya 和田哲也, writing of the seated forms of 居合, judged that they likely carried a sense of training, and reports that sitting was held good for calming the spirit, under no new name [28]. In the sources read here, the line between the two names is first drawn in Japanese in 1938, by a manual arguing for a new name on the ground of the spirit [4], and in English, as a definition, by Draeger in 1973. Hurst's correction of Draeger, that the traditional texts do not divide the terms so sharply, is consistent with this word's record [25].
I read 居合術 as a list-maker's name that became the art's own: the name of the Butokukai's titles, the name its masters and the Navy printed on their books, and the name 居合道 replaced from the late 1930s to the 1950s. The opposition of 術 and 道 is real, but in the sources read here it is an argument of 1938 for a new name, not a meaning the two words carried through the art's history; Draeger's English states it as a definition and reads it back into the Edo period and before. A buyer who hangs these three characters hangs the name the art bore from the 1840s to the 1950s, and in English the name of the classical schools.
Notes
- The 1886 dictionary names its source for the Tani school as 谷派劍術記, a record of the school, which is not read here [10].
- The 1918 book is catalogued as a revised second printing; the date of its first printing is not given in the record read, so the chapter may be older than 1918 [15].
Japanese Scrolls by Master Calligrapher Eri Takase
Sources not seen
- 『大日本武德會會報』 24, September 1919, the Butokukai's journal, which printed, in Nakamura's account, the circular renaming 剣術, 柔術 and 弓術 [16]. The compilation that reprints it is served to readers in Japan only. The circular's own words would show whether it named 居合術 at all, or left it by silence.
A reader with access to any of these is invited to write to Takase Studios at Tim@Takase.com.
References
- 渡邉一郎「居合術」, 日本大百科全書 (ニッポニカ), at kotobank. https://kotobank.jp/word/居合術-1503201
- 「居合」, デジタル大辞泉, 精選版 日本国語大辞典, 改訂新版 世界大百科事典, 百科事典マイペディア, ブリタニカ国際大百科事典 小項目事典, at kotobank. https://kotobank.jp/word/居合-29725
- 居合 and 居合道, JMdict, at jisho.org. https://jisho.org/word/居合い · https://jisho.org/word/居合道
- 典 Ten, "居合道 · iaidō · the way of drawing the sword", Philology, Takase Studios, 2026. https://takase.com/library/philology/iaido
- 国書データベース, 国文学研究資料館, the work records of the titles with 居合 or 居相, among them 一伝流居合之序, dated 寛永七, https://kokusho.nijl.ac.jp/work/1972152; 斉敏公田宮流居合免巻, dated 天保一一, https://kokusho.nijl.ac.jp/work/3696922; and 民弥流居合術, https://kokusho.nijl.ac.jp/work/3375380
- 「国立国会図書館所蔵「宗家文書」」, リサーチ・ナビ, National Diet Library. https://ndlsearch.ndl.go.jp/rnavi/oldmaterials/souke
- 『館守日記』 307, 嘉永元年 4–6月, manuscript, 宗家文書, scan 5. National Diet Library pid 2583932. https://dl.ndl.go.jp/pid/2583932/1/5
- 『館守日記』 333, 嘉永7年 7–閏7月, manuscript, 宗家文書, scan 179. National Diet Library pid 2583948. https://dl.ndl.go.jp/pid/2583948/1/179
- 『惣目録』 49, 文久3年1月–慶応2年1月, manuscript, 宗家文書, scans 79 and 100. National Diet Library pid 2584220. https://dl.ndl.go.jp/pid/2584220/1/79
- 嵯峨正作 編『大日本人名辞書』, 経済雑誌社, 1885–86, p. 1592, scan 398. National Diet Library pid 779849. https://dl.ndl.go.jp/pid/779849/1/398
- 文部省 編『日本教育史資料』 2, 1890, pp. 70 and 915–917, scans 42, 464 and 465. National Diet Library pid 1751344. https://dl.ndl.go.jp/pid/1751344/1/464
- 文部省 編『日本教育史資料』 1, 1890, p. 678, scan 359. National Diet Library pid 809554. https://dl.ndl.go.jp/pid/809554/1/359
- 京都府内務部学務課『明治庚戌行啓記事』, 1911, pp. 119–120, scans 70 and 71. National Diet Library pid 780899. https://dl.ndl.go.jp/pid/780899/1/70
- 典 Ten, "剣道 · kendō · kendo, the Japanese art of fencing with bamboo swords", Philology, Takase Studios, 2026. https://takase.com/library/philology/kendo
- 堀田捨次郎『剣道手ほどき : 附英信流居合術詳解』, 田中館, 1918, revised second printing, pp. 123–125, scans 72 and 73. National Diet Library pid 958348. https://dl.ndl.go.jp/pid/958348/1/72
- 中村民雄 編著『史料近代剣道史』, 島津書房, 1985, the editor's account, served on the library's premises only; known from the full-text search's snippets. National Diet Library pid 12146839. https://dl.ndl.go.jp/pid/12146839
- National Diet Library Search, books and documents whose titles carry 居合術, the catalogue records; among them 剣道手ほどき, 1918, https://ndlsearch.ndl.go.jp/books/R100000136-I1970867909819751854; 居合術, 1932, https://ndlsearch.ndl.go.jp/books/R100000001-I43111104052892; 劍道參考書 : 居合術, 1933, https://ndlsearch.ndl.go.jp/books/R100000136-I1971149384827899170; 立居合術心覺, 1933, https://ndlsearch.ndl.go.jp/books/R100000136-I1971149384870414632; 居合術 短劍術, 1941, https://ndlsearch.ndl.go.jp/books/R100000001-I47111100435557; the license of 1772, https://ndlsearch.ndl.go.jp/books/R100000136-I1970023484925971229; and the 竹内流 list of 1838, https://ndlsearch.ndl.go.jp/books/R100000103-I1346642
- "Iaijutsu", English Wikipedia, revision of 25 September 2026. https://en.wikipedia.org/w/index.php?oldid=1376569959
- Donn F. Draeger, Classical Bujutsu, The Martial Arts and Ways of Japan, vol. 1, Weatherhill, New York and Tokyo, 1973, pp. 69–71.
- Roald M. Knutsen, Japanese Polearms, 1963, read in the Internet Archive's full-text search windows. Internet Archive japanesepolearms0000roal. https://archive.org/details/japanesepolearms0000roal
- Kokusai Kankō Shinkōkai, The New Official Guide: Japan, Japan Travel Bureau, Tokyo, 1964, read in the Internet Archive's full-text search windows. Internet Archive newofficialguide1964unse. https://archive.org/details/newofficialguide1964unse
- Donn F. Draeger, Asian Fighting Arts, Kodansha International, Tokyo, 1969, read in the Internet Archive's full-text search windows; the item's record names Draeger, and the record of the 1974 printing names Draeger and Robert W. Smith. Internet Archive asianfightingart0000drae. https://archive.org/details/asianfightingart0000drae
- Donn F. Draeger, Classical Budo, The Martial Arts and Ways of Japan, vol. 2, Weatherhill, New York and Tokyo, 1973, pp. 85–87.
- Oscar Ratti and Adele Westbrook, Secrets of the Samurai: The Martial Arts of Feudal Japan, Charles E. Tuttle, 1973; new edition, Tuttle, 2009, Introduction, Definition of Bujutsu and Its Specializations, and chapter 4, Armed Bujutsu, the section The Art of Swordsmanship.
- G. Cameron Hurst III, Armed Martial Arts of Japan: Swordsmanship and Archery, Yale University Press, New Haven and London, 1998, pp. 8, 11–13 and 203, n. 19.
- Alexander C. Bennett, Kendo: Culture of the Sword, University of California Press, Oakland, 2015, pp. 2 and 126.
- 「居合道」, Japanese Wikipedia, revision of 31 May 2026. https://ja.wikipedia.org/w/index.php?oldid=109756613
- 和田哲也「居合道の成立、変遷過程についての一考察」, 『武道学研究』 11(2), 1978, pp. 47–48. https://www.jstage.jst.go.jp/article/budo1968/11/2/11_47/_pdf




