North American AstroPhysical Observatory (NAAPO) Cosmic Search: Issue 10 (Volume 3 Number 2; Spring (Apr., May, June) 1981) [Click on each advertising image below to obtain a larger image. The page in the magazine on which each ad was found in noted above the image.]

Advertising This ad was found on page 9. This ad was found on outside back cover. This ad was found on outside back cover. This ad was found on outside back cover. This ad was found on outside back cover.