Usagi Yojimbo, Book 7, by Stan Sakai, copyright 1992, 1993,
1996, 1999; Fantagraphic Books, Inc. copyright 1996, 1999; ISBN:
1-56097-304-8.
Usagi Yojimbo, Book 8: Shades of Death, by Stan Sakai, copyright
1993, 1994, 1997; Dark Horse Comics, copyright 1997, first edition
September 1997; ISBN: 1-56971-259-X.