Source: Official Army Register of the Volunteer Force of the United States Army for the Years 1861, '62, '63, '64, '65. Part VII Location: 973.741 / Un3r
Last Name:	Orr
First Name:	Peter
Middle Name:	H.
Rank:	Second Lieutenant
Death Date:	1863 October 27
Regiment:	Twenty-First Regiment, Missouri Infantry
Page:	107