Piece from a 1917 Photoplay magazine
Buster Keaton, Roscoe Arbuckle, and Alice Mann; collage by yours truly
All slapstick aside, Coney Island is a mini time capsule of the park as it was in 1917. Some of the sights and rides are well documented for us to see today. It also showcases how much fashion has changed in one hundred years. For example, we have Fatty, Al, and Buster all going to an amusement park in suits. The women's "swimsuits" are complete with matching hats and stockings. Notice the length of Fatty's wife's dress, not to mention she is wearing long sleeves at the beach. According to Wikipedia, The Chicago Board of Censors cut the dressing room shot of a woman exposing her knee. Times change.
For you Keaton fans, watch for Buster as one of the three Keystonesque Kops summoned to break up the Fatty/Al water fight. I've never seen it confirmed anywhere, but smart money might bet on Buster in drag as Alice when "she" flips out of the Shooting the Chutes boat. The man sure earned his paycheck.