Daguerreotype Gallery of Thomas Martin Easterly, St. Louis, Missouri, 1851.
Source: Missouri History Museum

Daguerreotype Gallery of Thomas Martin Easterly, St. Louis, Missouri, 1851.

Source: Missouri History Museum

The Government Building at the Louisiana Purchase Exposition, St. Louis, Missouri, 1905.
Source: David R. Francis, The Universal Exposition of 1904

The Government Building at the Louisiana Purchase Exposition, St. Louis, Missouri, 1905.

Source: David R. Francis, The Universal Exposition of 1904

Nina Leen, Teenagers spending allowance on bowling, St. Louis, Missouri, USA, April 1957.

Nina Leen, Teenagers spending allowance on bowling, St. Louis, Missouri, USA, April 1957.

Chimpanzees performing acrobatics for an audience at the St. Louis Zoo. Photograph by Alfred Eisenstaedt. St. Louis, Missouri, USA, September 1942.

Chimpanzees performing acrobatics for an audience at the St. Louis Zoo. Photograph by Alfred Eisenstaedt. St. Louis, Missouri, USA, September 1942.

Teenagers enjoying milkshakes at a drive-in diner. Photograph by Nina Leen. St. Louis, Missouri, USA, April 1957.

Teenagers enjoying milkshakes at a drive-in diner. Photograph by Nina Leen. St. Louis, Missouri, USA, April 1957.

Nina Leen, Teenagers buying tickets at a movie theater, St. Louis, Missouri, USA, April 1957.

Nina Leen, Teenagers buying tickets at a movie theater, St. Louis, Missouri, USA, April 1957.

Teenagers sharing pizza. Photograph by Nina Leen. St. Louis, Missouri, USA, April 1957.

Teenagers sharing pizza. Photograph by Nina Leen. St. Louis, Missouri, USA, April 1957.

Teenager with his model airplane collection. Photograph by Nina Leen. St. Louis, Missouri, USA, April 1957.

Teenager with his model airplane collection. Photograph by Nina Leen. St. Louis, Missouri, USA, April 1957.

Nina Leen, Teenagers spending the evening at the movies, St. Louis, Missouri, USA, April 1957.

Nina Leen, Teenagers spending the evening at the movies, St. Louis, Missouri, USA, April 1957.

The St. Louis Fashion Board evaluating new fashions. Photograph by Nina Leen. St. Louis, Missouri, USA, 1944.

The St. Louis Fashion Board evaluating new fashions. Photograph by Nina Leen. St. Louis, Missouri, USA, 1944.