| The U.S. Navy Vanguard Satellite was successfully put into earth circling orbit on March 17, 1958, as part of the United States' participation in the International Geophysical Year. The Navy's three stage Satellite Launching Vehicle rose to an altitude of 300 miles where the third stage rocket pushed the speed of the vehicle to more than 18,000 miles per hour orbit velocity. This is card No. 9 in the 1959 NABISCO Shredded Wheat "Defenders of America" series. |
