Statistics for occurrence #1 of “J. A. Chadwick” in chapter 20 of Admiral David D. Porter, The Naval History of the Civil War.:

... Acting-Master, A. M. Gould. Acting-Master's Mate, D. B. Corey. Acting-Master, Newell Graham. Acting-Master's Mate, Wm. Collins. Acting-Master, J. H. Johnstone. Acting-Master's Mate, J. A. Chadwick . Acting-Master, H. B. Jenks. Acting-Master's Mate, G. R. Clifton. Acting-Master, E. C. Merriman. Acting-Master's Mate, J. W. Comer. Midshipman, N. W. Thomas. Acting-Master's Mate, William Da...
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