Daguerreotype of a Group of People Posing on Brienner Straße in Munich, Kingdom of Bavaria (1840)

Daguerreotype of a group of people posing on Brienner Straße in Munich, Kingdom of Bavaria, 1840. One of the earliest photographs taken in Germany. By Steinheil.

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Portrait of Union Officers of the 15th Pennsylvania Volunteer Cavalry Regiment Posing in an Unidentified Camp During the Civil War

Portrait of Union officers of the 15th Pennsylvania Volunteer Cavalry Regiment posing in an unidentified camp during the Civil War.

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French Soldiers and Civilians Examining a Captured German Plane During World War 1

French soldiers and civilians examining a captured German plane during World War 1. Animated stereoview.

Militiamen of the 5th Maryland Regiment Posing with Civilians on Boston Common to Commemorate the 100th anniversary of the Battle of Bunker Hill in Boston, Massachusetts (1875)

Militiamen of the 5th Maryland Regiment posing with civilians on Boston Common to commemorate the 100th anniversary of the Battle of Bunker Hill in Boston, Massachusetts, June 17, 1875. By Thomas Lewis. Animated stereoview.

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View of a Busy Meeting Street in Front of the Charleston Hotel in Charleston, South Carolina (1860)

View of a busy Meeting Street in front of the Charleston Hotel in Charleston, South Carolina, 1860. By Osborn and Durbec.

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Union Soldiers of the 71st New York Volunteer Infantry Regiment Preparing a Meal in Front of a Tent in an Unidentified Camp During the Civil War (1861)

Union soldiers of the 71st New York Volunteer Infantry Regiment preparing a meal in front of a tent in an unidentified camp during the Civil War, 1861. Attributed to Mathew Brady.

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British Soldiers in and Around a Trench During the Battle of Arras in France (1917)

British soldiers in and around a trench during the Battle of Arras in France, 1917. Smoke from artillery shell explosions can be seen in the distance.

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Hand-Colored Daguerreotype Portrait of Two Men Posing With the Headstone of a Recent Grave (1853)

Hand-colored daguerreotype portrait of two men posing with the headstone of a recent grave, location unknown, 1853.

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Tintype Portrait of an Unidentified African American Freemason Wearing a Masonic Apron (1872)

Tintype portrait of an unidentified African American Freemason wearing a Masonic apron, c. 1872.

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Calotype Portrait of a Group Having Tea at Lacock Abbey in Wiltshire, England (1843)

Calotype portrait of a group having tea at Lacock Abbey in Wiltshire, England, August 17, 1843. By William Henry Fox Talbot.

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