Portrait of a Group of Union Soldiers and Civilians Posing in Front of a Cottage in an Unidentified Camp During the Civil War

Portrait of a group of Union soldiers and civilians posing in front of a cottage in an unidentified camp during the Civil War. Attributed to Mathew Brady.

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Daguerreotype View of Union Street in New Bedford, Massachusetts (1850's)

Carte de visite copy of a daguerreotype view of Union Street in New Bedford, Massachusetts, c. 1850's. Attributed to Morris Smith.

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Portrait of Three Union soldiers Posing in Front of a Tent in an Unidentified Camp During the Civil War

Portrait of three Union soldiers posing in front of an adjutant's tent in an unidentified camp during the Civil War. From Miller's Photographic History of the Civil War.

A British Soldier Posing With a Rifle Grenade in a Trench Somewhere in the Balkans During World War 1

A British soldier posing with a rifle grenade in a trench somewhere in the Balkans during World War 1. Published by the Keystone View Company. Animated stereoview.

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A Group of Children Posing Behind a Snow Fort in Newburyport, Massachusetts (1800's)

A group of children posing behind a snow fort in Newburyport, Massachusetts, c. 1800's. By D. T. Reed. Animated stereoview.

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Portrait of a Group of Union Officers and Ladies Posing in Front of a Cottage at an Unidentified Location During the Civil War

Portrait of a group of Union officers and ladies posing in front of a cottage at an unidentified location during the Civil War. Attributed to Mathew Brady.

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Hand-Colored View of Terrapin Tower and Horseshoe Falls Taken From Goat Island in Niagara Falls, New York (1856)

Hand-colored view of Terrapin Tower and Horseshoe Falls taken from Goat Island in Niagara Falls, New York, 1856. By the Langenheim brothers.

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Two Portraits of Union Soldier Torrey W. Sibley Taken 44 Years Apart in 1862 and 1906

Two portraits of Union soldier Torrey W. Sibley taken 44 years apart in 1862 and 1906. He served with Company A of the 13th Vermont Volunteer Infantry Regiment and was wounded at the Battle of Gettysburg on July 3, 1863. From the book Pictorial History Thirteenth Regiment Vermont Volunteers War of 1861-1865.

Union Soldiers Posing in Front of and on a Pontoon Bridge Across the James River at Deep Bottom, Virginia, During the Siege of Petersburg

Union soldiers posing in front of and on a pontoon bridge across the James River at Deep Bottom, Virginia, during the Siege of Petersburg. Attributed to Mathew Brady.

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An Unidentified Man Posing in Front of a Union Field Hospital Near City Point, Virginia, During the Siege of Petersburg

An unidentified man posing in front of a field hospital near City Point, Virginia, during the Siege of Petersburg. Attributed to Mathew Brady. Animated stereoscopic photographs.

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Union Soldiers of the 9th Vermont Volunteer Infantry Regiment Marching Out of Their Camp in New Bern, North Carolina (1863)

Union soldiers of the 9th Vermont Volunteer Infantry Regiment marching out of their camp in New Bern, North Carolina, 1863. From Miller's Photographic History of the Civil War.

Union Provost Marshals Tearing Down a House Whose Occupants Had Been Accused of Selling Liquor to Union Soldiers in Alexandria, Virginia, During the Civil War (1863)

Union provost marshals tearing down a house whose occupants had been accused of selling liquor to Union soldiers in Alexandria, Virginia, 1863. From Miller's Photographic History of the Civil War.

Portrait of a Group of Unidentified Women Posing With Brooms Tied With Bows and a Drum in a Portrait Studio in Lowell, Massachusetts (1873)

Portrait of a group of unidentified women, possibly women’s rights activists, posing with brooms tied with bows and a drum in a portrait studio in Lowell, Massachusetts, c. 1873. By Simon S. Towle.

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French Medical Personnel Finding the Location of a Bullet in a Wounded Patient With a Mobile X-Ray Machine in a Field Hospital During World War 1

French medical personnel finding the location of a bullet in a wounded patient with a mobile x-ray machine in a field hospital during World War 1.

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Daguerreotype Portrait of President James Buchanan (1850′s)

Daguerreotype portrait of President James Buchanan, c. 1850′s. By Mathew Brady.

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Animated Stereoscopic Portrait of Chippewa Chief Named O-gee-tub

Animated stereoscopic portrait of Chippewa chief named O-gee-tub (translated as "Heavy Sitter").

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Portrait of Union Soldiers of the 7th Regiment New York State Militia Posing in Front of a Tent at Camp Cameron in Washington, D.C. (1861)

Portrait of Union soldiers of the 7th Regiment New York State Militia posing in front of a tent at Camp Cameron in Washington, D.C., 1861. Attributed to Mathew Brady. Animated stereoscopic photographs.

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