Daguerreotype Portrait of an Unidentified Man (1850′s)

Daguerreotype portrait of an unidentified man, c. 1850′s.

Source: Smithsonian American Art Museum.

Map Showing the Possible Routes Which German Zeppelins Could Use to Bomb England Published Near the Start of World War 1 in August 1914

Map showing the possible routes which German Zeppelins could use to bomb England published near the start of World War 1 in August 1914. From The Illustrated War News magazine published in 1914.

Map of a Russian Redoubt at the Start of World War 1 (1914)

Map of a Russian redoubt at the start of World War 1. From The Illustrated War News magazine published in 1914.

Portrait of Union Soldiers of the 56th Massachusetts Volunteer Infantry Regiment Playing a Game of Cards in a Camp During the American Civil War (1860′s)

Portrait of Union soldiers of the 56th Massachusetts Volunteer Infantry Regiment playing a game of cards in a camp during the American Civil War, c. 1860′s. From the book War Diary and Letters of Stephen Minot Weld, 1861-1865 published in 1912.

Map of French Forts Surrounding Paris Published Near The Start of World War 1 in September 1914

Map of French forts surrounding Paris published near the start of World War 1 in September 1914. From The Illustrated War News magazine published in 1914.

Propaganda Composite Photo Postcard Showing a Smiling German Who Has Captured Three Allied Soldiers and Put Them in Chains Which Was Published During the Early Months of World War 1 (1914)

Propaganda composite photo postcard showing a smiling German who has captured three Allied soldiers (British, Russian, and French) and put them in chains which was published during the early months of World War 1 in 1914. From The Illustrated War News magazine published in 1914.

Stereoview Portrait of a Group Posing With a Boat on a Beach in Old Orchard Beach, Maine (1800′s)

Stereoview portrait of a group posing with a boat on a beach in Old Orchard Beach, Maine, c. 1800′s. By James O. Durgan.

Source: New York Public Library.

Portrait of President Millard Fillmore Attributed to Baltimore Photographer Jesse Harrison Whitehurst (1850′s)

Portrait of President Millard Fillmore attributed to Baltimore photographer Jesse Harrison Whitehurst, c. 1850′s.

Source: Library of Congress.
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View of the Interior of a Classroom in Winchester, New Hampshire (1800′s)

View of the interior of a classroom in Winchester, New Hampshire, c. 1800′s. By Keene, New Hampshire, photographer J. A. French.

Source: New York Public Library.

“German Winter Watch in the Vosges. Firing a Heavy Howitzer.“ German Soldiers in the Vosges Mountains of France During World War 1 (1910's)

“German winter watch in the Vosges. Firing a heavy howitzer.“ German soldiers in the Vosges Mountains of France during World War 1.

Source: National Archives and Records Administration.