BASIC FIELD MANUAL FM 30-40 MILITARY INTELLIGENCE.
IDENTYFICATION OF UNITED  STATES ARMORED VEHICLES.
WAR DEPARTMENT WASHINGTON MAY 21, 1941.
37 STRON, 33 CZARNOBIAŁE FOTOGRAFIE, 41, RYSUNKI.
ROZDZIAŁY:
RESTRICTED
SECTION I . GENERAL
SECTION II . ARMORED VEHICLES OF THE UNITED STATES.