Senta Yamada / S. Yamada (1961)
Summary: This booklet is the first by Senta Yamada Sensei, and the first Aikido book published in the U.K. It contains a brief history of Aikido, along with principles and theory, and concludes with an explanation of Yamada Sensei's "fifteen basic techniques." Well illustrated with hand drawings. Note: A recent (2004) 76-page re-edit and reprint of this book has been published (see red cover photo).
Senta Yamada / 1st edition, Arco Publishing Company, Inc., New York (1966)
Summary: This is a technical manual, with pictures and explanations. The author, Senta Yamada, was a highly-ranked judoka, reportedly invited after the war to study with Ueshiba Morihei O-Sensei. Most of his study, however, was in Tomiki style, in which he achieved (by 1966) 6th Dan. The second image is from page 119 of the book and includes pictures and brief biographies of Yamada and his co-author, Alex Macintosh.