The Door Into Summer
From Author Wars - https://authorwars.com/publications/the-door-into-summer-295018.html
Overview:
- Title: The Door Into Summer
- Author: Robert A. Heinlein
- Year: Unknown
- Publisher: Signet / New American Library
- Price: $0.50
- Pages: 159
- Binding: Paperback
- Type: Novel
- Title Reference: The Door Into Summer
- Notes:
- "Fourth Printing"; no number line
- No date other than original © 1957
- An ad on the last page lists #D2790, verified as published Oct. '65, so this printing likely after that
- Cover artist is uncredited. A part of the illustration from the 1st Signet printing is used.