United's Mainliner 300

Front:
Unit liner J00

Back:
POST UNITED CARD Please address and return to stewardess who will stamp and mail for you... AIR LINES Rey Ram 23 Oct 125 Coast to coast, border to border and across the blue Pacific to Hawaii speed United's giant new Mainliner 300s - capable of carrying 52 passen- gers and nearly three tons of cargo at better than five miles a minute and offering unprecedented comfort and luxury aloft. H-1