The Rectangle began as a Chicago Tribune page featuring a variety of cartoons and serial features. King's Rectangle Sunday page, usually printed in black-and-white outside the comics section, was a late addition to a page that ran for years in the Tribune. On January 9, 1913, King introduced a bounded rectangle containing themed single-panel gags (beginning with a page headed Hints to Husbandettes), but pages in that format did not appear with any regularity until February 1914. The Rectangle title was finally introduced on December 27, 1914.
King created several recurring strips, including Tough Teddy, The Boy Animal Trainer, Here Comes Motorcycle Mike, Hi Hopper (about a frog) and his first successful full-page comic, Bobby Make-Believe (1915). During World War I, King was overseas drawing scenes of the war for publication in American newspapers.
Read more about this topic: Frank King (cartoonist)