The 1930’s and early 40’s.
Marmon-Harrington CTL-3a. (Combat Tank Light)
Marmon-Harrington CTL-6, two man crew, 3 .30 cal. MG’s.
Marmon-Harrington CTM-3TBD, 3 man crew, 2 .50 cal. MG’s in turret, 3 .30 cal. MG’s in hull. Marmon–Herrington CTLS - Wikipedia. [Marmon-Herrington CTMS-ITB1
Marmon-Herrington MTLS-1GI4
. Marmon-Herrington CTLS-4TA. CTLS 4TAC. ctl 3m.