Parisians walk on the street past lottery and vermouth advertisements in 1935.Photograph by Maynard Owen Williams, National Geographic

Parisians walk on the street past lottery and vermouth advertisements in 1935.
Photograph by Maynard Owen Williams, National Geographic

Navy pilots test their steadiness and muscular coordination in Corpus Christi, Texas.Photograph by the U.S. Navy

Navy pilots test their steadiness and muscular coordination in Corpus Christi, Texas.
Photograph by the U.S. Navy

An Autochrome depicts a 1920’s gas station in front of the U.S. Capitol Building.Photograph by Edwin L. Wisherd, National Geographic

An Autochrome depicts a 1920’s gas station in front of the U.S. Capitol Building.
Photograph by Edwin L. Wisherd, National Geographic

A hunter among dozens of Pacific walrus heads, killed for their tusks, Bering Sea, March 1911.Photograph by Beverly B. Dobbs, National Geographic

A hunter among dozens of Pacific walrus heads, killed for their tusks, Bering Sea, March 1911.
Photograph by Beverly B. Dobbs, National Geographic

Men dry betel nuts in George Town, Malaysia, 1938.Photograph by Maynard Owen Williams, National Geographic

Men dry betel nuts in George Town, Malaysia, 1938.
Photograph by Maynard Owen Williams, National Geographic

East German women harvesting sugar beets, September 1974.Photograph by Gordon Gahan, National Geographic

East German women harvesting sugar beets, September 1974.
Photograph by Gordon Gahan, National Geographic

Tourist touches fragments of colossal head and hand of Constantine in Rome, December 1962.Photograph by Robert Sisson, National Geographic

Tourist touches fragments of colossal head and hand of Constantine in Rome, December 1962.
Photograph by Robert Sisson, National Geographic

A locomotive and two coaches of the “Atlantic” in railroad exhibit near Baltimore, Maryland, November 1927.Photograph by Charles Martin, National Geographic

A locomotive and two coaches of the “Atlantic” in railroad exhibit near Baltimore, Maryland, November 1927.
Photograph by Charles Martin, National Geographic

Rear Admiral Robert E. Peary dressed in the fur clothing he wore for the Arctic expedition, September 1938.Photograph by Robert E. Peary, National Geographic

Rear Admiral Robert E. Peary dressed in the fur clothing he wore for the Arctic expedition, September 1938.
Photograph by Robert E. Peary, National Geographic

Louis Leakey and his family inspect the campsite of an early hominid in Tanzania, November 1961.Photograph by Robert Sisson, National Geographic

Louis Leakey and his family inspect the campsite of an early hominid in Tanzania, November 1961.
Photograph by Robert Sisson, National Geographic

Vendors and pedestrians along a steep staircase in Hong Kong, November 1934.Photograph by W. Robert Moore, National Geographic

Vendors and pedestrians along a steep staircase in Hong Kong, November 1934.Photograph by W. Robert Moore, National Geographic

Victoria amazonica water lilies can reach 20 feet in circumference and support up to 300 pounds each. Perching children atop the massive leaves was all the rage in water gardens of the time. Salem, North Carolina, c. 1892. Photograph by Frank Hege, National Geographic

Victoria amazonica water lilies can reach 20 feet in circumference and support up to 300 pounds each. Perching children atop the massive leaves was all the rage in water gardens of the time. Salem, North Carolina, c. 1892.
Photograph by Frank Hege, National Geographic

A replica of the Mayflower sails into New York Harbor with a welcoming fleet, November 1957.Photograph by B. Anthony Stewart, National Geographic

A replica of the Mayflower sails into New York Harbor with a welcoming fleet, November 1957.
Photograph by B. Anthony Stewart, National Geographic

A man shows tribal scars on his back in the Democratic Republic of the Congo, November 1919.Photograph by E. Torday, National Geographic

A man shows tribal scars on his back in the Democratic Republic of the Congo, November 1919.
Photograph by E. Torday, National Geographic

The post office and general store in Castolon, Texas.Photograph by Luis Marden, National Geographic

The post office and general store in Castolon, Texas.
Photograph by Luis Marden, National Geographic