April 2, 1923. Children eating at the White House Easter egg roll in Washington. View full size. 4x5 glass negative, National Photo Company Collection.

1941. Building liberty ships in an abandoned freight car factory near the Atlantic coast. Freighter sections for the merchant fleet are being prefabricated at the rate of one ship a week. View full size. Photograph by Howard Liberman.

"County seat of Hale County, Alabama," in August 1936 as photographed by Walker Evans. View full size. The McCollum Grocery on the corner is the subject of another Evans photo, where it's identified as being in Moundville. See Bill Cary's comment. Is this Moundvlle? Haleyville? Greensboro? (Other Evans photos identify this store as being in Greensboro, the county seat.)

A young woman models in a studio for photographer Fitz W. Guerin. No date is recorded with the photo, but it was probably taken around 1902. View full size.

A young woman models in a studio for photographer Fitz Guerin, c. 1902. View full size.

Students in grade 6 of Washington School in Lawton, Oklahoma, have their throats examined during a medical inspection. Photograph by Lewis Wickes Hine, 1917. View full size.

Children in Grade 5 of Washington School in Lawton, Oklahoma participate in a Medical inspection. Photograph by Lewis Wickes Hine, 1917. / Lewis W. Hine. View full size.

Sheffield, Alabama (Tennessee Valley Authority). Kenneth C. Hall, his wife and daughter rowing on the Tennessee River. Photograph by Arthur Rothstein for the Tennessee Valley Authority, June 1942. View full size.

A tintype cameraman on a San Antonio, Texas, street. Photo by Russell Lee, March, 1939. View full size.

Sons of Mr. Leatherman ride in a burro-drawn cart in Pie Town, New Mexico. Photo by Russell Lee, June, 1940. View full size.

March 1939. "Mexican barber. San Antonio, Texas." View full size. 35mm nitrate negative by Russell Lee for the Farm Security Administration.

A Spanish-American fiesta in Taos, New Mexico. Photograph by Russell Lee, July, 1940. View full size.

Children browse a street market in Washington, D.C. Photograph by John Vachon, November, 1937. View full size.

Private Ivan A. Smith, editor of the Camp Hood Panther, at Camp Hood, Texas, originated this novel method of reminding fellow soldiers to practice discretion. From the Office of War Information, 1943. View full size.

Travelers board an aircraft in an unknown region of Africa. From the Matson Photo Service, 1936. View full size.