Science Fiction Yearbook, Number 4

From Author Wars - https://authorwars.com/publications/science-fiction-yearbook-number-4-257258.html

Overview:

Title: Science Fiction Yearbook, Number 4
Author: Sharon Moore
Year: 1970
Publisher: Popular Library, Inc.
Price: $0.50
Pages: 100
Binding: pulp
Type: MAGAZINE
Title Reference: Sail On! Sail On!
Notes: Attributions for interior art from signature if present and legible. The illustrations on the cover and inside covers appear to be reprints but their original publication dates could not be determined.