The T42 was a the first in a line of tanks that led to The M18 Hellcat. The tank was cancelled in favor of the T49, the next step towards the M18 Hellcat.
Type: Tank Destroyer
Origin: United States
-37 mm M6
Rickard, J (28 May 2014), T42 37mm Gun Motor Carriage , http://www.historyofwar.org/articles/weapons_T42_37mm_GMC.html