This is WWII War Department copy of TM 9-731A M4 and M4A1 Early Sherman, an Easy 1 Productions manual on compact disc.    This not one of the poor reproductions that are easily found on the Internet; all scans are in jpeg. form and at 400 dpi.  Also included is the engine manual and a Ft. Knox manual on the 75mm gun.  The CD also contains over 200 photos of different M4s and M4A1s.  As always, if this CD is ever updated with new material, you are entitled to the upgrade.  Follow Easy 1 Productions on Facebook.