| Trade Stimulator |  The Pickwick | 1900 | Klein & Co., Henry London, England |
| Trade Stimulator | The Klondike | 1899 | Klondike Slot Machine Co. Cincinnati, OH, USA |
| Trade Stimulator | Klondike Prospector | 1900 | Klondyke Prospector Mfg. Co. Chicago, IL, USA |
| Trade Stimulator | Dice Game | 1892 | Klugel, O.G. Indianapolis, IN, USA |
| Trade Stimulator | Le Calliope Rembourseur | 1902 | Klumpke, W. Paris, France |
| Trade Stimulator | L'Américain | 190? | Klumpke, W. Paris, France |
| Trade Stimulator | L'Amiral | 190? | Klumpke, W. Paris, France |
| Trade Stimulator | L'Idéal W.K. | 190? | Klumpke, W. Paris, France |
| Trade Stimulator | Poker Automatique | 190? | Klumpke, W. Paris, France |
| Trade Stimulator | Our Leader | 1922 | Knight Novelty Co. Cliftondale, MA, USA |
| Trade Stimulator | Wheel | 1892 | Knight, H. Trenton, NJ, USA |
| Trade Stimulator | Roll-A-Cent | 1940 | Koplo Sales & Supply Co. Chicago, IL, USA |
| Trade Stimulator | Seven Grand | 1941 | Koplo Sales & Supply Co. Chicago, IL, USA |
| Trade Stimulator | Pocket Pool | 1938 | Kramer Mfg. Co. |
| Trade Stimulator | Card Machine | 1904 | Kruse, A.H.F. Portland, OR, USA |
| Trade Stimulator | Wheel | 1909 | Kruse, A.H.F. Portland, OR, USA |
| Trade Stimulator | Pointer | 1914 | Kruse, A.H.F. Portland, OR, USA |
| Trade Stimulator | Roulette L.M.O. | 1913 | LMO Lecuyer, Mejeannel, Oswald France |
| Trade Stimulator | Improved Card Machine | 1892 | LaBuff Mfg. Co. Rochester, NY, USA |
| Trade Stimulator | Les Tonneaux | 1911 | Lamazière & Bunzli France |
| Trade Stimulator | Penny Slot Machine | 1903 | Lane, J.J. Providence, RI, USA |
| Trade Stimulator | The Lark 3-Reel model | 1927 | Lark Distributing Co. Inglewood, CA, USA |
| Trade Stimulator | The Lark 5-Reel model | 1927 | Lark Distributing Co. Inglewood, CA, USA |
| Trade Stimulator | Sure Shot Shooter | 1929 | Lark Distributing Co. Inglewood, CA, USA |
| Trade Stimulator | Indoor Striker | 1931 | Lark Mfg. Co. Los Angeles, CA, USA |
| Trade Stimulator | Game O' Skill Amusement Toy | 1893 | Latimer & Co., J.D. San Francisco, CA, USA |
| Trade Stimulator | Le Mistigri | 1909 | Le Cavelie, J. Paris, France |
| Trade Stimulator | La Mirobolante à Bille | 1913 | Lecoeur, O. France |
| Trade Stimulator | Mephisto | 1913 | Leemann, Th. & W. Switzerland |
| Trade Stimulator | Prize Pepsin Gun Vending Machine | 1897 | Lehigh Novelty Co. Philadelphia, PA, USA |
| Trade Stimulator | Monarch Card Machine | 1894 | Leonhardt, Jr. & Co., Chas. San Francisco, CA, USA |
| Trade Stimulator | Draw Poker | 1895 | Leonhardt, Jr. & Co., Chas. San Francisco, CA, USA |
| Trade Stimulator | Improved Monarch Card Machine | 1895 | Leonhardt, Jr. & Co., Chas. San Francisco, CA, USA |
| Trade Stimulator | Two for One Skill | 1895 | Leonhardt, Jr. & Co., Chas. San Francisco, CA, USA |
| Trade Stimulator | 4 Card | 1891 | Lewis & Strobel Philadelphia, PA, USA |
| Trade Stimulator | Poker Solitaire | 1891 | Lewis & Strobel Philadelphia, PA, USA |
| Trade Stimulator | Race Game | 1889 | Lewis Mfg. Co. Minneapolis, MN, USA |
| Trade Stimulator | Dice Game | 1892 | Lewis, William T. Buffalo, NY, USA |
| Trade Stimulator | Shimmer Dice | 1939 | Liberty Mfg. Co. Council Bluffs, IA, USA |
| Trade Stimulator | Twins Win | 1940 | Liberty Mfg. Co. Council Bluffs, IA, USA |
