Books worth reading (the “classics” of Aikido):

BUDO TRAINING IN AIKIDO by Morihei Ueshiba.
ISBN 4-88996-079-1 Sugawara Martial Arts Institute / Japan Publications 2001

AIKIDO by Kisshomaru Ueshiba.
ISBN 0 87040 268 4 Hozansha Publishing Co. Ltd 1974

THE SPIRIT OF AIKIDO by Kisshomaru Ueshiba
ISBN 0 87011 600 2 Kodansha International 1984

A LIFE IN AIKIDO by Kisshomaru Ueshiba
ISBN 978 4 7700 2617 0 Kodansha International 2008

BEST AIKIDO (VOLUMES 1 and 2) by Kisshomaru and Moriteru Ueshiba
ISBN 4-7700-2762-1 & 4-7700-2763-X Kodansha International 2002/3

AIKIDO AND THE HARMONY OF NATURE by Mitsugi Saotome
ISBN 0 87773 855 6 SHAMBHALA 1993

THE SPIRITUAL FOUNDATIONS OF AIKIDO by William Gleason
ISBN 0 89281 508 6 Destiny Books 1995

TRADITIONAL AIKIDO (VOLUMES 1 to 5) by Morihiro Saito
ISBN 0 87040 266 8 Japan Publications Trading Co 1973

AIKIDO COMPLETE by Yoshimitsu Yamada
Library of Congress 76 80017 Castle Books Inc. 1969

THE NEW AIKIDO COMPLETE by Yoshimutsu Yamada.
ISBN 0 8065 0301 2 Lyle Stuart Inc. 1981

AIKIDO INITIATION by Christian Tissier
ISBN 2 901551 14 9 SEDIREP 1985

THE MARTIAL ARTS by Michael Random
ISBN 0 7064 0809 8 Octopus Books Ltd. 1978

BUSHIDO THE SOUL OF JAPAN by Inazo Nitobe
Originally published 1899 Again published by Ohara Publications Inc 1969