In this unpublished photo from 1969, President Lyndon B. Johnson, First Lady Lady Bird Johnson, and Vice President Spiro Agnew are among the hundreds of people watching the launch of Apollo 11 at Kennedy Space Center.
PHOTOGRAPH BY OTIS IMBODEN, NAT GEO IMAGE COLLECTION
National Geographic photographer Jean Shor changes film in her camera while a curious cow looks on. Jean and her husband Franc photographed scenes in Switzerland for a story that published in 1956.
PHOTOGRAPH BY FRANC & JEAN SHOR, NAT GEO IMAGE COLLECTION
Kids play in backyard pools in East Baltimore, Maryland. In this story, published in February 1975, writer Fred Kline called the city "mellow, antique, friendly."
PHOTOGRAPH BY MARTIN ROGERS, NAT GEO IMAGE COLLECTION
In this picture from the February 1968 issue, a woman working in a power plant in the former Czechoslovakia insulates wires in a generator, which will go on to produce 50 million watts of power.
PHOTOGRAPH BY JAMES P. BLAIR, NAT GEO IMAGE COLLECTION