[Source: Descriptive Rolls of 91st PA; National Archives and Record Administration]
[related page: officers in the 91st PA (Official Army Register)]
[The descriptive book contains another list of commissioned officers]
[This page has a pocket, with a card indicating that this regimental book was carded, and the other was not]
List of Commissioned Officers.
| No. | Names | Rank | Date of Appointment. | Remarks. |
| 1 | Jno C. Partenheimer | Captain | Jan 4. 65 | Promoted from Commissary Sergt Jan 4 65 |
| 1 | Wm Knapp | 1st Lt | Jan 4. 65 | Promoted from Sergt Jany 4. 65 |