Washington, D.C. Central High shell crew on the Potomac at the Key Bridge in 1927. View full size. National Photo Company Collection glass negative.

1865. "Harpers Ferry, West Virginia. View of Maryland Heights at confluence of Shenandoah and Potomac rivers." Wet plate glass negative (detail) by James Gardner. Civil War glass negative collection, Library of Congress. View full size.

March 23, 1909. Construction of the Manhattan Bridge as seen from Brooklyn. 8x10 glass negative, George Grantham Bain Collection. View full size.

December 1941. "Lower Manhattan seen from the S.S. Coamo leaving New York." View full size. 35mm negative by Jack Delano. Office of War Information.

February 5, 1917. "Naval militia guard a New York bridge." View full size. 6x4 dry plate glass negative, George Grantham Bain Collection. Zoom the posters.

1862. On the James River in Virginia. "Effect of Confederate shot on Federal ironclad Galena." Wet plate glass negative by James F. Gibson. View full size.

July 9, 1862. "James River, Virginia. Sailors relaxing on deck of the U.S.S. Monitor." From photographs of the Federal Navy and seaborne expeditions against the Atlantic Coast of the Confederacy, 1861-1865. View full size. Wet plate negative, left half of stereograph pair. Photograph by James F. Gibson.

July 9, 1862. Deck and turret of U.S.S. Monitor on the James River, Virginia. From photographs of the Federal Navy, and seaborne expeditions against the Atlantic Coast of the Confederacy. Wet collodion glass negative, left half of stereo pair. Photographed by James F. Gibson. View full size.

May 1912. "Madame Gadski and daughter." The noted opera singer shipboard in New York. View full size. George Grantham Bain Collection.

September 7, 1923. "Massachusetts Nautical School." Sailors and shipboard pets. View full size. National Photo Company Collection glass negative.

June 26, 1922. "Laura Lyle, Olive Robinson, Virginia Roche, Ruth O'Brien" aboard a ship. 5x7 glass negative, George Grantham Bain Collection. View full size.

April 22, 1912. Our second look at Lolo (Michel) and Edmond Navratil, survivors of the Titanic disaster whose father went down with the ship. View full size. Lolo, the last remaining male survivor of the Titanic sinking, died in 2001.

May 1, 1926. Eight-oar shell crew of Capital Athletic Club against a backdrop of the Key Bridge over the Potomac. View full size. National Photo Company.

May 1, 1926. Washington, D.C. Eight-oar shell crew of the Capital Athletic Club on the Potomac between the Francis Scott Key and Aqueduct bridges. National Photo Company Collection glass negative. View full size.

1924. Washington Canoe Club rowers on the Potomac near the recently finished Key Bridge and older Aqueduct Bridge. View full size. National Photo Co.