We found the following sites to be very informative and interesting:

 1) The Aikido FAQ Site

 2) The Aikibudo Site

 3) The Judo Information Site

 4) The University of British Columbia (UBC) Classical Jujutsu Club

 5) Aikido World

 6) The Aikido Journal

 5) The University of Toronto Judo Site

 7) The Yoseikan Budo Site

1) Aikibudo, by Alain Floquet, published by Judogi 1985

2) The Hidden Roots of Aikido: Aiki Jujutsu Daitoryu, by Shiro Omiya, published by Kodansha International 1998

3) Judo - Appendix: Aikido, by Kenji Tomiki, published by Japan Travel Bureau 1956

4) Kodokan Judo, by Jigoro Kano, published by Kodansha International 1986

5) A Book of Five Rings, by Miyamoto Musashi, published by The Overlook Press 1974

6) The Zen Way to The Martial Arts, by Taisen Deshimaru, published by Arkana (Penguin Group) 1982