Keystone Cops (seringkali disebut "Keystone Kops ") adalah kelompok polisi inkompeten, lucu dan fiksi. Kelompok tersebut tampil daalm film-film komedi bisu slapstick yang diproduksi oleh Mack Sennett untuk Keystone Film Company antara 1912 dan 1917.
Keystone Cops dalam The Stolen Purse (1913). Dari kiri ke kanan: Robert Z. Leonard , Mack Sennett , Bill Haber, Henry Lehrman , ___ McAlley, Chester Franklin , Ford Sterling , Fred Mace , dan Arthur Tavares .
Basinger, Jeanine, (1999), chapter on Keystone Kops (also covers Mabel Normand ) in Silent Stars , ISBN 0-8195-6451-6 .
King, Rob (2008). The Keystone Film Company and the Emergence of Mass Culture University of California Press . ISBN 978-0-520-25537-1 . Davis, Lon & Debra compiled and edited by, (2020), Chase! A Tribute to the Keystone Cops , BearManor Media, Orlando, ISBN 978-1629335438 .
Film fitur Hoffmeyer's Legacy The Bangville Police Mabel Normand The Gangsters Roscoe Arbuckle , Ford Sterling , and Al St. John Barney Oldfield's Race for a Life Mabel Normand Mabel's New Hero Mabel Normand and Roscoe Arbuckle Making a Living Available to watch/download from the Internet Archive ) with Charles Chaplin Tillie's Punctured Romance Available to watch/download from the Internet Archive ) with Marie Dressler , Mabel Normand , and Charles Chaplin In the Clutches of the Gang Roscoe Arbuckle , Mabel Normand , and Al St. John The Noise of Bombs Edgar Kennedy as police chief Love, Loot and Crash Available to watch/download from the Internet Archive ) with Charley Chase Wished on Mabel Roscoe Arbuckle and Mabel Normand Love, Speed and Thrills Available to watch/download from the Internet Archive ) with Mack Swain , Minta Durfee , and Chester Conklin 
