Time Travelers [4]

From Author Wars - https://authorwars.com/books/time-travelers-4-1224941.html

Overview:

Title: Time Travelers [4]
Author: Hans-Ulrich Osterwalder
Year: 1980
Type: Interior Art

Editions/Publications:

Unknown. The Best of Omni Science Fiction No. 2 (Unknown, Hans-Ulrich Osterwalder, Omni Society, $3.75, 144 pages, Trade Paperback, Anthology)
Unknown. Omni, May 1980 (Unknown, Hans-Ulrich Osterwalder, Omni Publications International Ltd., $2.25, 148 pages, bedsheet, MAGAZINE)