New York, 1908. "Children's Aid Society." View full size. 8x10 glass negative, George Grantham Bain Collection, Library of Congress.

December 1941. "Treads for Army halftracks, made of rubber firmly bonded to steel members, are cured under heat and pressure in molds which are first sprayed with a lubricant. Goodrich tire plant, Akron, Ohio." View full size. 4x5 nitrate negative by Alfred Palmer for the Office of War Information.

April 1942. DeLand, Florida, machine shop pool. "Aircraft construction class. Clyde Williams, instructor in the Daytona Beach Vocational School, guides the hands of Marie Myers in the first steps of becoming an aircraft welder. Marie was a high school student taking a business course, when she gave it up for defense training entitling her to a high school diploma. She has two brothers in the Army." View full size. 4x5 negative by Howard Hollem, Office of War Information.

Boston, January 29, 1917. "Sadie Singer, 15 years old, racking flowers at the Boston Floral Supply Co., 347-357 Cambridge Street. Said to be the only flower factory in Massachusetts." View full size. Photograph by Lewis Wickes Hine.

January 1937. "Planting beans near Belle Glade, Florida." View full size. 4x5 nitrate negative by Arthur Rothstein for the Farm Security Administration.

New York, June 1942. "Nursery school at the Queensbridge housing project. Dressing a child after a nap." View full size. 4x5 nitrate negative by Arthur Rothstein for the Office of War Information.

December 1941. Sunny San Juan, Puerto Rico. View full size. Medium format Kodachrome transparency by Jack Delano for the Farm Security Administration.