Beschreibung
Dexterity board game. Object is to maneuver your marble as far across the board as possible without falling into one of the large hazard holes.

The publisher catalog number, printed on the cover and rules, is 4021.

The game first appears in Milton Bradley's 1930 Catalogue of Games, Paints, and Puzzles on page 22.

According to this catalog, "The build-up in this box has [a] map of the United States printed on it, and the players endeavor to carry mail by airplane from a ship in the Atlantic Ocean across the country." The box size: 6 1/4" x 12 1/2". The game cost was listed as 15 cents in the 1930 catalog.

The same catalog includes two additional, different games with the same name, Air Mail, on both board games: The Game of Air Mail with publisher catalog number 4245 on page 58, the other with 4881 on page 59 (with no illustration)

The 4021 game also appears in the 1931 Catalogue of Games, Paints, and Puzzles on page 25. The 4245 and 4881 games also appear in that catalog.