Description: Delivery of the first heavy tanks. The new fifty-seven-ton tank, known as the M-1 leading a parade of tanks in its initial tryout demonstration. Background is the M-3 medium thirty-eight-ton tank. The other two are the M-3 light thirteen-and-a-half-ton tanks.

Remark: M6 heavy tank.

Source: Library of Congress, Prints & Photographs Division, FSA-OWI Collection, Reproduction number LC-USE6-D-002312 DLC.

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