Today in the history of the American comic strip: March 7

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.

3.7.1956: Lieutenant Sonny Fuzz, a young, by-the-book Army officer, makes his first appearance in Mort Walker’s Beetle Bailey.

3.7.1959: Newspapers run the last daily strip of Tillie the Toiler. Russ Westover's comic about a "stylish working girl" debuted in 1921.

3.7.1967: The musical You’re a Good Man, Charlie Brown premieres off-Broadway at Theatre 80 in New York's East Village.
 

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.