Statistics for occurrence #1 of “W. H. Penfield” in chapter 36 of Admiral David D. Porter, The Naval History of the Civil War.:

...llen. Acting-Masters, Joshua D. Warren and J. H. Gleason; Acting-Assistant Surgeon, F. M. Dearborne; Acting-Assistant Paymaster, H. M. Rogers; Acting-Ensigns, Wm. H. Brice. J. W. Willard and W. H. Penfield ; Acting-Master's Mates, A. E. Barrett and Charles Attmore; Engineers: Acting-Second-Assistant, C. D. Kiersted: Acting Third-Assistants, C. O. Morgan and J. M. Battin. Acting-Master, Francis ...
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