Portrait of an Unidentified Maid Probably Taken Somewhere in Europe (1850′s/1860′s)

Portrait of an unidentified maid probably taken somewhere in Europe, c. 1850′s/1860′s.

Source: Rijksmuseum.

Portrait of an Algerian Man Posing With a Musical Instrument (1860's/1870's)

Portrait of an Algerian man posing with a musical instrument, c. 1865-1875.

Source: Rijksmuseum.

View of a Busy Market Street in San Francisco, California (1890′s)

View of a busy Market Street in San Francisco, California, c. 1890′s. By Isaiah West Taber.

Source: Library of Congress.

Portrait of English Stage Actress Jean Margaret Davenport (1850's)

Portrait of English stage actress Jean Margaret Davenport, c. 1853-1856. By American photographer Frederick De Bourg Richards.

Source: Library of Congress.

Portrait of a Large Group of Children and Adults Posing in Front of the Saints Peter and Paul Catholic Church in Boonville, Missouri (1871)

Portrait of a large group of children and adults posing in front of the Saints Peter and Paul Catholic Church in Boonville, Missouri, 1871.

 Source: Library of Congress.

Portrait of a Young Algerian Woman (1860's/1870's)

Portrait of a young Algerian woman, c. 1865-1875.

Source: Rijksmuseum.

Union Soldiers and Civilians Posing in an Encampment and On the Ruins of the Morris Island Lighthouse Near Charleston, South Carolina, During the American Civil War (1863)

Union soldiers and civilians posing in an encampment and on the ruins of the Morris Island Lighthouse near Charleston, South Carolina, during the American Civil War in July or August 1863. Some of the men on the pile of rubble are possibly watching distant exchanges of artillery fire by Union and Confederate forces in Charleston Harbor. By photographers Haas and Peale.

Source: Library of Congress.

Hand-Colored Stereoview of a Buffalo and New York City Railroad Bridge Over the Genesee River Near Portage, New York (1860)

Hand-colored stereoview of a Buffalo and New York City Railroad bridge over the Genesee River near Portage, New York, c. 1860. By the New York Stereoscopic Company.

Source: New York Public Library.

Carte De Visite Portrait of a Couple Playing Cards as a Man Reclines in the Background (1860′s/1870's)

Carte de visite portrait of a couple playing cards as a man reclines in the background, c. 1860′s/1870's. By photographer Joseph B. Bergstresser of Renovo, Pennsylvania.

Source: New York Public Library.

Portrait of Crewmen Posing on the Tugboat Named Clyde on the James River in Virginia During the American Civil War (1860's)

Portrait of crewmen posing on the tugboat named Clyde on the James River in Virginia during the American Civil War, c. 1862-1865. Attributed to Mathew Brady.

Source: National Archives and Records Administration.

Portrait of Members of a Bicycle Club Posing With Their Bicycles Somewhere in South Africa (1890's/1900's)

Portrait of members of a bicycle club posing with their bicycles somewhere in South Africa, c. 1890-1910.

Source: Rijksmuseum.

Retouched Portrait of a Woman Identified as Mrs. Skiddy Attributed to Mathew Brady (1860′s)

Retouched portrait of a woman identified as Mrs. Skiddy attributed to Mathew Brady, c. 1860′s.

Source: National Archives and Records Administration.

Portrait of a Group of European and Chinese Men Posing in Front of a Bank in Shanghai, China (1871)

Portrait of a group of European and Chinese men posing in front of a bank in Shanghai, China, 1871. By Scottish photographer John Thomson.

 Source: Wellcome Images.