[Source: Descriptive rolls of 91st PA; National Archives and Record Administration]
[related page: officers in the 91st PA (Official Army Register)]
List of Commissioned Officers.
[A paper saying that only the descriptive list has been carded is at the bottom of the page; it claims that 194 names were carded]| [No.] | Names | Rank | Date of Appointment. | Remarks. |
| Chas S Brown | Capt | Nov 25 | resigned Feb 22nd 1862 | |
| ['George Black' is crossed out] | ||||
| Charles Henry | Capt | May 12 | Promoted from 2d Lt Resigned [several illegibly light words follow] | |
| James H Closson | Capt | May 12th /63 | Mustered as Captain March 1st [1864] Killed in [illegible] | |
| George P. Finney | Capt | Dec 1st /64 | Mustered as Captain Jan 4th [?] Promoted from 1st Lt [?] | |
| George Black | 1 Lieut | Nov 14 | Wounded at Chancellorsville, May 3rd /63 | |
| George P Finney | 1st Lieut | Mustered Nov 3rd /64 Promoted from 1st sgt [?] | ||
| Wm [?] H Frailey | 1st Lieut | January [?] 6th /65 | " [sc. Mustered] Jan 6th [?] /65 " " " [sc. promoted from 1st sgt] | |
| James J Donnelly | 1 Lieut | May 1st /65 | Transferred from 118th Regt P.V. by Order No [the right side of the page seems to be cut off] | |
| Charles Henry | 2 Left | Nov 25 | Promoted to Captain May 12th [1862] | |
| Stephen Eastwick | 2 Lieut | May 14th | Resigned May 22d 1862 | |
| John Q Dyke | 2nd Lieut | May 24th [1862] | Resigned December 30th 1862 | |
| Joseph T Jones | 2d Lt | March 18th /63 | wounded in action June 2nd [?] 64 | |