Statistics for occurrence #1 of “U. S. Gun” in chapter 40 of Admiral David D. Porter, The Naval History of the Civil War.:
|Max. Freq.||Min. Freq.|
|†||U. S. Gun||8||8||0||0||0 user votes||Vote|
|U. S. Gunboats||4||0||0||0||0 user votes||Vote|
† 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.