Large Mobile Gun Firing

Front:
LARGE MOBILE GUN FIRING, FORT MAC ARTHUR, CALIFORNIA

Back:
31733 One of Uncle Sam's largest army training fields is located in the southwestern part of the U.S.A. Here, in Fort MacArthur at San Pedro, men are skilled in large machine artillery prac- tice. HERS со PUB. BY INDEPENDENT MAGAZINE CO., SAN PEDRO, CALIFORNIA-