Statistics for occurrence #1 of “Coehorn” in chapter 6, page 101 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.:

...en embrasure, six 24-pounder siege-guns en embrasure, two 24-pounder seacoast guns en barbette. It was also armed with five 30-pounder Parrott rifled guns, one 10-inch siege-mortar and one 24-pounder Coehorn mortar. Three of the platforms for siege-guns remained vacant. Washington was no longer in danger when this photograph was taken, and the company is taking its ease with small arms stacked-...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Coehorn 97 12 1 0 0 user votes

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