Yoshimitsu Yamada / second printing 1978 edition, Citadel Press, Carol Publishing Group (1969)
Summary: This is probably Yoshimitsu Yamada's first book. It begins with a congratulatory message from Koichi Tohei, a little history, and a discussion of "one-point" and "ki." The bulk of the book deals with ukemi and basic waza.
Yoshimitsu Yamada / Lyle Stuart (1981)
Summary: As the title would suggest, this book is a re-edited and larger edition of the earlier "Aikido Complete".
Yoshimitsu Yamada / Citadel (1994)
Summary: This book is a further re-edit of the earlier "Complete Aikido" and "The New Aikido Complete". It has been reprinted at least once following the first 1994 edition.