The Adventures of Smilin' Jack was an aviation comic strip that first appeared October 1, 1933 in the Chicago Tribune and ended April 1, 1973.
After a run of 40 years, it was the longest running aviation comic strip. The strip was created by 27-year-old cartoonist and aviation enthusiast Zack Mosley, who had previously worked on the Buck Rogers and Skyroads strips.
Smilin' Jack was originally Mack Martin, in On the Wing, but Chicago Tribune editor Joseph Medill Patterson did not like the original title, so on December 31, 1933, the name was changed to Jack Martin, and the strip was retitled The Adventures of Smilin' Jack after its creator, who had been nicknamed "Smilin' Zack" by his colleagues. In later years it was simply known as Smilin' Jack. Zack Mosley's assistant during the 1940s was Boody Rogers.