Statistics for occurrence #1 of “John Ericsson” in chapter 32 of Admiral David D. Porter, The Naval History of the Civil War.:

...d he produced vessels of the Monitor type that had not their equals at that time in any European navy. Whatever alterations may have been made in the Monitor system, the original idea was that of John Ericsson ; any change or improvement that left the hull submerged, or nearly so, and retained the revolving turret, was his by right. The criticisms on his first invention led him to consider the importa...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
John Ericsson 394 59 18 1 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.