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| The M1919 at Aberdeen Proving Ground in 1920. | The turretless M1928 being demonstrated to the Army. |
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| The M1921 during trench crossing trials. |
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| Side view of the M1931, designated as Medium Tank T3 by the Army. |
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| The T3 on trials at Aberdeen Proving Ground, in 1932. | Front view of the M1932 . |
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| The sleek lines of the M1932. | The M1937 demonstrating at high speed. |