Statistics for occurrence #1 of “Knap” in chapter 4, page 35 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...ext="ptext" xmlns="http://www.w3.org/TR/xhtml1/strict"> The upper photograph is of Independent Battery E of Pennsylvania Light Artillery, known as Knap's Battery, after its captain, Joseph M. Knap . Here the battery is within a strong fortification, guarded by a slashing of trees with branches pointing outward, visible beyond the walls. At Antietam, where the battery distinguished itself, ...

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Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Joseph M. Knap 21 10 7 0 0 user votes
Knap 25 0 1 0 0 user votes
J. M. Knap 2 0 0 0 0 user votes
Jacob Knap 2 0 0 0 0 user votes
John Knap 2 0 2 0 0 user votes

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