Statistics for occurrence #1 of “J. M. Chadwick” in chapter 46 of Admiral David D. Porter, The Naval History of the Civil War.:

...A. H. Allen, J. C. Chaffee and Ralph Aston. Lieutenant-Commander, Geo. A. Bigelow; Assistant Surgeon, D. M. Skinner; Acting-Assistant Paymaster, D. W. Riddle; Acting-Ensigns, J. S. Clark and J. M. Chadwick ; Acting-Master's Mates, J. L. Blauvelt, J. P. Sturgin and J. Mayo; Engineers: Acting-Third-Assistants, W. H. Brown, F. D. Stuart, Lucius Harlow and Richard Dwyer. Lieutenant-Commander, A. P....
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