File #2313: "1955._Fort_tri-motor_spraying_DDT._Western_spruce_budworm_control_project._Powder_River_control_unit,_OR._(32213742634).jpg"

1955._Fort_tri-motor_spraying_DDT._Western_spruce_budworm_control_project._Powder_River_control_unit,_OR._(32213742634).jpg