Statistics for occurrence #1 of “R. W. Elwell” in chapter 41 of Admiral David D. Porter, The Naval History of the Civil War.:

...Engineers: Acting-First-Assistant, J. B. Lowell; Acting-Second-Assistant, Isaac Buck. Acting-Master, Geo. B. Livingston; Acting-Assistant-Paymaster, C. H. Hammatt; Acting-Ensigns, A. Buhner, R. W. Elwell and C. A. Stewart; Acting-Master's Mates, I. S. Sampson and T. M. Webb; Engineers: Acting-Second-Assistants,W. T. Worrell and W. S. Sillman; Acting-Third-Assistants, Erastus Barry, John Ross, A. L. C...
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