Illustration of a green frog wearing a hat with a closed umbrella on top of a suitcase on a white background
DALO BUTTON & EMBLEM CO., N.Y.C., N.Y. 10010
It is likely promoting an interlining agreement between British European Airways (BEA), which operated from 1946-1974, and Trans World Airlines (TWA), which operated from 1925-2001. Such an agreement allowed the airlines to link routes and promote destinations where they did not operate. In the 1960s, BEA and TWA flew routes that connected over 100 cities in the U.S. and Europe.