Fort Knox, June 1942. "Light tank going through water obstacle." View full size. 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information.

1924. "Children of Mrs. Milan Getling" (actually Getting). National Photo Company Collection glass negative. View full size.

June 1942. "Why greases must be saved. Introducing two good soldiers of the home front: the housewife who saves her waste household fats and greases, and the butcher to whom she gives this salvaged fat after she has collected at least one pound, strained it through a metal sieve and poured it into a large, wide-mouthed can. Butchers displaying the poster shown here will pay househoulders for the fat, and sell it to rendering plants thereby turning this valuable material into industrial channels where it will be processed into ammunition for America's fighting men." Medium format negative by Ann Rosener for the OWI. View full size.

6 p.m., May 18, 1909. Somersworth, New Hampshire. "Group of boys working in Great Falls Manufacturing Co. Smallest boy is Alfred Ouellet, 212 Main Street. Fat boy is Willie Laudry, 35 South St. Boy on right hand end is Napoleon St. Lawrence, 23 Union Street." View full size. Photo and caption by Lewis Wickes Hine.

October 1941. "Picnic party from the mill towns enjoys the autumn foliage of the Berkshires along the Mohawk Trail in Massachusetts." View full size. Medium format nitrate negative by John Collier for the Farm Security Administration.

April 1940. "Mailboxes in Catron County, New Mexico." View full size. Medium format safety negative by Russell Lee for the Farm Security Administration.

"Fort Burnham, Virginia, the former Confederate Fort Harrison. Federal soldiers in front of bomb-proof headquarters." Photographs from the main Eastern theater of war, the Army of the James, June 1864-April 1865. Wet plate glass negative, half of stereo pair, photographer unknown. View full size.