Today in the history of the American comic strip: October 21

American cartoonists and writers may not have invented the comic strip, but some argue that the comics, as we know them today, are an American creation. Clearly, the United States has played an outsize role in the development of this underappreciated art form.

10.21.1906: C. W. Kahles’ Hairbreadth Harry debuts under the title Our Hero's Hairbreath Escapes. The following January the spelling of the word "hairbreadth" was corrected, and the title became Hairbreadth Harry, the Boy Hero. The strip folded in 1940. A 1967 revival did not last long.

Most of the information listed here from one day to the next comes from two online sites -- Wikipedia, and Don Markstein's Toonopedia -- as well as 100 Years of American Newspaper Comics, edited by Maurice Horn. Note that my focus is on American newspaper comic strips (and the occasional foreign strip that gained popularity in the United States). Thus, comic books and exclusively online comics are not included here.