| Trade Stimulator |  Kazoo | 1935 | Kalamazoo Automatic Music Co. Kalamazoo, MI, USA |
| Trade Stimulator | Kazoo-Zoo | 1935 | Kalamazoo Automatic Music Co. Kalamazoo, MI, USA |
| Trade Stimulator | Kentucky Derby | 1934 | Stone Bros., Inc. Chicago, IL, USA |
| Trade Stimulator | Kentucky Derby | 1934 | Pennant Novelty Co. Chicago, IL, USA |
| Trade Stimulator | Key Hole | 1936 | ESCO Exhibit Supply Co. Chicago, IL, USA |
| Trade Stimulator | Keystone | 1931 | Keystone Sales Co. Chicago, IL, USA |
| Trade Stimulator | Keystone Puritan Bell | 1929 | Field Mfg. Corp. Peoria, IL, USA |
| Trade Stimulator | King | 1950 | Comet Industries, Inc. Chicago, IL, USA |
| Trade Stimulator | King Base Ball Machine | 1931 | Flatbush Gum Co., Inc. Brooklyn, NY, USA |
| Trade Stimulator | King Dodo 3-Way | 1903 | Mills Novelty Co. Chicago, IL, USA |
| Trade Stimulator | King Dodo 5-Way | 1903 | Mills Novelty Co. Chicago, IL, USA |
| Trade Stimulator | King Golf | 1928 | R. & R. Mfg. Co. Benton Harbor, MI, USA |
| Trade Stimulator | King of the Diamond | 1929 | One-Cent Amusement Co. Camden, NJ, USA |
| Trade Stimulator | King Row | 1938 | Neff Novelty Co. Danville, IL, USA |
| Trade Stimulator | King Six | 1931 | Withey Co., B.A. Chicago, IL, USA |
| Trade Stimulator | King Six Jr. | 1935 | Withey Co., B.A. Chicago, IL, USA |
| Trade Stimulator | King's Horses | 1933 | Ad-Lee Novelty Chicago, IL, USA |
| Trade Stimulator | King's Horses | 1933 | Western Equipment & Supply Co. Chicago, IL, USA |
| Trade Stimulator | Kitzmiller's Automatic Salesman | 1926 | Matheson Novelty & Mfg. Co. Los Angeles, CA, USA |
| Trade Stimulator | Klix | 1941 | Groetchen Tool & Mfg. Co. Chicago, IL, USA |
| Trade Stimulator | Klix | 1944 | ABCO Novelty Co. Chicago, IL, USA |
| Trade Stimulator | Klix | 1949 | Groetchen Tool & Mfg. Co. Chicago, IL, USA |
| Trade Stimulator | Klondike | 1897 | Fey & Co., Charles San Francisco, CA, USA |
| Trade Stimulator | Klondike | 1932 | Steinberg, H.J. Worchester, MS, USA |
| Trade Stimulator | Klondike Prospector | 1900 | Klondyke Prospector Mfg. Co. Chicago, IL, USA |
| Trade Stimulator | Knock-Knock | 1933 | Osbrink Mfg. Co., R.H. Chicago, IL, USA |
| Trade Stimulator | Koin-Kick Football | 1928 | Novix Specialties New York, NY, USA |
| Trade Stimulator | Kontest Bomber | 1947 | Gillespie Games Co. Long Beach, CA, USA |
| Trade Stimulator | Kontest Poker | 1947 | Gillespie Games Co. Long Beach, CA, USA |
| Trade Stimulator | Kounter King | 1938 | Mills Novelty Co. Chicago, IL, USA |
| Trade Stimulator | Kromo Kolored Kube | 1927 | ESCO Exhibit Supply Co. Chicago, IL, USA |
| Trade Stimulator | L'Addition | 1909 | KF Kaufmann Frères France |
| Trade Stimulator | L'Aeroplan | 1910 | Mills Novelty Co. Chicago, IL, USA |
| Trade Stimulator | L'Aeroplan | 1905 | Cie. Caille Paris, France |
| Trade Stimulator | L'Aéro-Golf | 193? | Ludo Nice, France |
| Trade Stimulator | L'Aérodrome | 1912 | Unknown |
| Trade Stimulator | L'Aigle | 1911 | Nau, Abel Paris, France |
| Trade Stimulator | L'Alphabet | 1909 | Morin, E. France |
| Trade Stimulator | L'Américain | 190? | Klumpke, W. Paris, France |
| Trade Stimulator | L'Amiral | 190? | Klumpke, W. Paris, France |
