I photographed these M8 Greyhound armored car examples at Fort Lewis, Dubois and the FHC.
The M20 Armored Utility Car was also based on the M8 Greyhound. The M8 had a 37mm main gun in an open-top turret, while the M20 had an open crew compartment with a ring mount for an M2 .50 caliber machine gun.