Daratto shita pose catalog だらっとしたポーズカタログ (relaxed natural poses) [POSE BOOK - JAPANESE EDITION] Paperback – January 1, 1958

it's a collection of photos meant for pose reference, it's nice that they'll take the same pose from multiple different angles

A great reference book for beginning artists! Lots of different angles and even some tips to guide you through drawing. The packaging was amazing and the book came without a single wrinkle!