The Foundation Trilogy

From Author Wars - https://authorwars.com/publications/the-foundation-trilogy-235093.html

Overview:

Title: The Foundation Trilogy
Author: Isaac Asimov
Year: 1969
Publisher: Doubleday / SFBC
Pages: 227+viii+227+vi+225
Binding: Hardcover
Type: Omnibus
Title Reference: Second Foundation
Notes:
• PV1 copy purchased pre-1970. • Reissue, first SFBC edition had no catalog # • First printing has gutter code "15K", which indicates a printing in April 1969. • Known reprint codes include "19L" (1970), "44M" (1971), "22P" (1973), "L13" (1981, verified; SFBC # now on back of the jacket), "M24" (1982), "S14" (1977) and "V26" (1980) • The two prologues are in-universe, not separate content