Archipelago

From Author Wars - https://authorwars.com/publications/archipelago-264119.html

Overview:

Title: Archipelago
Author: R. A. Lafferty
Year: 1979
ISBN-10: 0936414022
Publisher: Manuscript Press
Price: $12.95
Pages: 283
Binding: Hardcover
Type: Novel
Title Reference: Archipelago
Notes: Distributed by PDA Enterprises.
The listing in Locus #231 (March 1980) states it had no ISBN, and was published in February 1980. Neither external ID (OCLC & LCCN) lists an ISBN. Some Abebooks.com dealer give the ISBN as 0-936414-03-0. There was also a 100-copy signed limited edition available from PDA Enterprises, but Locus doesn't list the price.