Most of the following is taken from a post Nihonto Bijutsubu Message Board. Other titles have been added over time. Please contact me if you believe anything has been missed. You might also like to check out Jim Gilbert’s website for an excellent list of tosogu references (http://home.earthlink.net/~jggilbert/reading.htm).

ENGLISH / OTHER LANGUAGE BOOKS

Japanese Sword Fittings: The Naughton Collection by H.R. Joly (1912, reprinted in 1973).
Japanese Sword Guards: Tsuba from the collection of Sir Arthur H. Church (1914, reprinted in 1970).
The Baur Collection: Japanese Sword Fittings and Associated Metalwork by B.W. Robinson (1980).
Tosogu: Treasures of the Samurai by Graham Gemmell (1991).
Sukashi Tsuba by Sasano Masayuki (1972).
Tsuba, an Aesthetic Study – Dr. Torigoye Kazutaro/Haynes.
The Index of Japanese Sword Fittings – 3 Vols – Haynes.
The Robert E. Haynes, Ltd. Auction Catalogs Vols 1-10.
Kokusai Tosogu Kai (KTK) Conference and Exhibition Catalogues – 7 Volumes.
Sword mounting of the Higo Province – Adapted from Higo Kinkoroku by S. Nagaya by Gustov Jacoby.
Nihonto Koza Volume VI, Kodogu Part I – Harry Watson
Japanese Sword Fittings and metalwork of the Lundgren Collection.
Old Tsuba – Robert Burroway.
Kozuka 100 – Claude Thuault collection.
Lethal Elegance: The Art of Samurai Sword Fittings by Joe Earle (2004).
The Henry D. Rosin Collection of Japanese Sword Fittings (1993)
Sukashi Tsuba in Europaischen Sammlungen by Eckhard Kremmers (1994).
Japanese Swords and Sword Furniture in the Museum of Fine Arts Boston by Ogawa Morihiro (1987).

JAPANESE LANGUAGE BOOKS

Tsuba Kanshoki 鐔観照記 1st and 2nd Ed. by Dr. Torigoye Kazutaro.
Japanese Sword Guard Masterpieces from the Sasano Collection Part I by Sasano Masayuki.
Tosogu No Kanshu 刀装具の鑑賞 by Sasano Masayuki.
Goto-ke Jushichi-dai 後藤家十七代 (17th generations of Mainline Goto) by Shimada.
Kanzan Token Koza 寒山刀剣講座Vols 5 and 6 by Kanzan Sato.
Toso Kodogu Koza 刀装小道具講座 Vols 1-8 by Wakayama Takeshi.
Toso Kodogu Meiji Taikai – 3 Volume set by Wakayama Takeshi.
Toso Kinko Jiten 刀装金工事典 by Wakayama Takeshi.
Shinsen Kinko Meikan 新撰金工銘鑑 2nd Ed. by Kokuho Kenichi and Masumoto Suichiro.
Akasaka Tsuba 赤坂鐔 by Sano Art Museum.
Sukashi Tsuba by Sano Art Museum (1999).
Tsuba no Bunkashi by Hatori Jiichiro (1969)
Tsuba Taikan 鐔大鑑 by Kawaguchi Noboru.
Jidai Mitokoro shu (genshoku zuhan ) 時代三所集 by S. Ikeda.
Ko Kogai 古笄 by S. Ikeda.
Uchigatana Koshirae 打刀拵 by Tokyo National Museum (1976).
Kyo Goto no Kenkyu by Kasahara Koju and Akimoto Shigeo.
Kasahara Koju by Akimoto Shigeo.
Works of Hirata and Shimizu by Mitsuru Ito.
Works of Kanshiro Nishigai by Mitsuru Ito.
Futagoyama Norisuke Ko by NBTHK Nagoya branch group.
Bunka no Naka no Tosogu by Hasimoto Haruo.
Kinko Mino Bori by The City Museum of Gifu.
Kinko Mino Bori by Kokubo Kenichi.
Tanoshii Shinchu Zogan Tsuba 100 Tsuba by Otani.
Sukashi Tsuba by Kokubo Kenichi.
Kinko Tsuba by Kokubo Kenichi.
The Japanese Sword guards (Beauty and charming Japanese 19th century metal work) by Masayuki Murata.
Choshu no Tsuba by K. Murakami
Fine Japanese Sword Fittings Menuki. Vols 1 & 2.
Kagamishi Tsuba by Sasano Masayuki (1980).
Owari to Mikawa no Tsubako by Okamoto Yasutomo (1983)