Paper, ink. Gift of the Frank J. Lichtanski Collection, SFO Museum Collection. 2011.061.0635.

Sheet of four conjoined promotional stamps issued by American Airlines; each yellow, blue, and red over white background with text, “Flygpost / Swedish Pioneer Centennial / Air Mail” and “AA” eagle logo in laurel wreath..

This is object is classified as "Philately (Stamp, Postage)", and is part of the Aviation Archive collection.