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

...First-Assistant, J. W. Storms; Acting-Second-Assistants, Warren Ewen and W. J. Howard; Acting-Third-Assistants, J. H. Mathews, W. J. Barrington and H. S. Short; Boatswain, J. H. Downs; Acting-Gunner, J. C. Clapham . Commander, Gustavus H. Scott; Lieutenant-Commander, Chas. S. Norton; Assistant Surgeon, Job Corbin; Assistant Paymaster, C. S. Perley; Acting-Masters, Chas. Courtney, Jacob Kimball and J. B...
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