The Door Into Summer

From Author Wars - https://authorwars.com/publications/the-door-into-summer-389743.html

Overview:

Title: The Door Into Summer
Author: Robert A. Heinlein
Year: 2006
ISBN-10: 1592221211
Publisher: Meisha Merlin
Pages: vii+161
Binding: Hardcover
Type: Novel
Title Reference: The Door Into Summer
Notes: Available only by purchase of entire edition.
Limited to 5000 copies in three grades: Cloth ($2200), Leather ($3500) and Exclusive ($5000). This publication is Leather Edition with leather binding, all page edges gilded and inch-wide silk ribbon marker.
All editions in individual slipcases; jackets to show 4 murals on spines when books are assembled as a set.
Full number line on copyright page.
Source text is Doubleday first-edition hardcover, January-February 1957.