The Door Into Summer

From Author Wars - https://authorwars.com/publications/the-door-into-summer-251499.html

Overview:

Title: The Door Into Summer
Author: Robert A. Heinlein
Year: 1970
ISBN-10: 0330025163
Publisher: Pan Books
Price: 5/-
Pages: 190
Binding: Paperback
Type: Novel
Title Reference: The Door Into Summer
Notes:
• "© Robert A. Heinlein 1957" • "© Fantasy House Inc 1936" • "First published in Great Britain 1967 by Victor Gollancz Ltd." • "This edition published 1970 by Pan Books Ltd" • Month from amazon.uk • Printing not stated, no number line; first known Pan edition • The artist is not credited, the artwork is clearly signed • "Robert Heinlein" on the front cover and spine, "Robert A. Heinlein" on the title and copyright pages • Australia 80c, New Zealand 75c, South Africa 60c