The Door Into Summer
From Author Wars - https://authorwars.com/publications/the-door-into-summer-263308.html
Overview:
- Title: The Door Into Summer
- Author: Robert A. Heinlein
- Year: 1969
- Publisher: Signet / New American Library
- Price: $0.75
- Pages: 159
- Binding: Paperback
- Type: Novel
- Title Reference: The Door Into Summer
- Notes:
- "Sixth Printing"; no number line
- Date not given but the catalog # puts the date sometime in 1969 [this is the first printing with this #, otherwise it would not be dateable]
- The artist is not credited, the full-size artwork was credited to Lehr on the '59 printing