For sale is a 1940s BOYS’ ATHLETIC LEAGUE BOOK OF POSTAL STICKERS. This item was probably used to entice charitable donations during door-to-door fund raising collections. The Boys’ Athletic League gave underprivileged NYC boys a chance to go to summer camp and see what a tree looks like. Inside the booklet are “AIR MAIL” and “FIRST CLASS MAIL” stickers. This mid-century book features a cool graphic of boys camping.