Born: 1884 March 31 in Rye, New York, United States
Died: 1960 May 7 in Brooklyn, New York, United States
Biography: Creator of Da Bum, usually symbolizing the baseball team, the Brooklyn Dodgers or the New York borough of Brooklyn. Most famous appearance of which appeared on the front page of the New York Daily News, Volume 37, Number 87, Wednesday, October 5, 1955, celebrating the first World Series win by the Brooklyn Dodgers.
"Genuine Leo – Gallo Remembers Leo O’Mealia" (New York Daily News), May 8, 1960 by Bill Gallo.
Print Media (non-comics):
Worked as an artist for the:
New York Daily News and Sunday News (1939-1960).
The Sporting News.
New York Evening Journal (circa 1920s, under Winsor McCay and assistant to sports cartoonists, “Tad” Dorgan and succeeded Dorgan upon his death).
New York World.
Comics in other media:
Created sports cartoons (writer, penciller, and inker) for:
The Rochester Evening Herald (circa 1913, under John Scott Clubb), created Sod Bug, a cartoon insect who commented on local baseball games.
The Rochester Times (circa 1915), work collected and seeing print as "Mut and Flea Brain Leaks".
New York Daily News and Sunday News (started in 1939, illustrating Jimmy Powers sports column),
Comic strip syndication:
One panel serial "The History of a White Hope" featuring a boxer called George “Sledge” Seiger, circa 1913.
Freddy Film daily (International Feature Service), June 11 - October 21, 1913, writer, penciller, and inker.
Little Pal daily (Associated Newspapers), November 17, 1913 - 1917?, 1920? - 1929, writer, penciller, and inker.
In Jungleland (alternate title: Jungle Definitions) daily (Associated Newspapers), 1914-1915, writer, penciller, and inker.
Pests daily (Associated Newspapers), March 9, 1915 - 1918?, writer, penciller, and inker.
Wedlocked daily (Associated Newspapers), December 31, 1917 - May 5, 1928, writer, penciller, and inker.
Sherlock Holmes daily (Bell Syndicate), August 18, 1930 - April 18, 1931, penciller and inker.
Fu Manchu daily (Bell Syndicate), April 20, 1931 - July 1, 1933, penciller and inker.
Believed to have worked as an assistant for Percy Crosby's comic strip Skippy (King Features Syndicate), dates unknown, and Robert Ripley's comic panel, Believe It or Not! (King Features Syndicate), also unknown dates.