Statistics for occurrence #1 of “Ohio” in entry cannon of Harper's Encyclopedia of United States History:
...guns and forcibly expanding the bore to its finished size by means of mandrels, 1869. Pneumatic dynamite torpedo-gun built and mounted at Fort Lafayette (founded on invention of D. M. Mefford, of Ohio ), 1885. Congress makes an appropriation for the establishment of a plant for gunmaking at the Watervliet arsenal, West Troy, 1889. Manufacture of heavy ordnance begun at the Washington navy-...
|Max. Freq.||Min. Freq.|
|†||Ohio (Ohio, United States)||4,328||891||10||1||0 user votes|
|Ohio (United States)||1,611||200||1||0||0 user votes|
|Ohio (Colorado, United States)||12||0||0||0||0 user votes|
|Ohio (Illinois, United States)||0||0||0||0||0 user votes|
|Ohio (Missouri, United States)||0||0||0||0||0 user votes|
|Ohio (New York, United States)||0||0||0||0||0 user votes|
|Ohio (Texas, United States)||0||0||0||0||0 user votes|
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.