Statistics for occurrence #1 of “Acting-Ensign J. B. Heizerman” in chapter 30 of Admiral David D. Porter, The Naval History of the Civil War.:

...ette.--Acting-Ensign E. S. Hamlin (1863); Acting-Ensign H. D. Green (1864). Tug Myrtle.--Second Assistant-Engineer Thomas Guernsey (1863); Acting-Ensign J. N. Goldsmith (1864). Tug Hyacinth.-- Acting-Ensign J. B. Heizerman (1863-4). Tug Thistle.--Acting-Ensign P. H. Timmons; Acting-Ensign R. E. Ettingham (1864). Tug Daisy.--Acting-Ensign D. C. Bowers (1833-4). Despatch Steamer Gen. Lyon.--Pilot R. E. Birch....
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