Keystone Cops

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.

• 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 (1912)
• The Bangville Police (1913) with Mabel Normand
• The Gangsters (1913) with Roscoe Arbuckle, Ford Sterling, and Al St. John
• Barney Oldfield's Race for a Life (1913) with Mabel Normand
• Mabel's New Hero (1913) with Mabel Normand and Roscoe Arbuckle
• Making a Living (1914) (Available to watch/download from the Internet Archive) with Charles Chaplin
• Tillie's Punctured Romance (1914) (Available to watch/download from the Internet Archive) with Marie Dressler, Mabel Normand, and Charles Chaplin
• In the Clutches of the Gang (1914) with Roscoe Arbuckle, Mabel Normand, and Al St. John
• The Noise of Bombs (1914) with Edgar Kennedy as police chief
• Love, Loot and Crash (1915) (Available to watch/download from the Internet Archive) with Charley Chase
• Wished on Mabel (1915) with Roscoe Arbuckle and Mabel Normand
• Love, Speed and Thrills (1915) (Available to watch/download from the Internet Archive) with Mack Swain, Minta Durfee, and Chester Conklin