[Source: Descriptive Rolls of 91st PA; National Archives and Record Administration]
[related page: officers in the 91st PA (Official Army Register)
[This page is preceded by a page with a handwritten 'B', and has on it a card listing the part carded]
[The descriptive book includes another list of commissioned officers]
List of Commissioned Officers.
| No. | Names | Rank | Date of Appointment. | Remarks. |
| 1 | Alpheus H. Bowman | Captain | December 3. '61 | |
| 1 | Morris Kayser | 1st Lieut | Nov 6th 1861 | |
| 1 | Justus A Gregory | 2nd Lieut | Dec 3. '61 |