Popular Science Magazine November 1947 Robots Attack Sonic Riddles 063017nonjhe2

Popular Science Magazine February 1969 Jacques Costeau 063017nonjhe2

POPULAR SCIENCE - JULY 1947 - NEW PLANS FOR PANAMA - VG

Popular Mechanics Magazine November 1947 New Army Tank Carrier 063017nonjhe

Science & Mechanics Magazine December 1947 Snow Travel 063017nonjhe2

Popular Science Magazine April 1950 Automatic Drives 063017nonjhe

Popular Science Magazine February 1948 New Guns For Human Bullets 063017nonjhe

Popular Science Magazine December 1967 Five-Cylinder Radial Engine 063017nonjhe2