SilentComedyMafia.com

Here's the first reel of an L-KO released April 17, 1918, directed by Walter S. Fredericks and featuring Mack Swain when he was comedy studio hopping and featuring Jack Perrin, Lily Loney, Mabel Healy, Bob Higgins and Molly Malone:

https://www.youtube.com/watch?v=jdQ3JogUs8U

RICHARD M ROBERTS