- Postal Laws and Regulations – 1859 – (courtesy Steven M. Roth)
- Instructions to Postmasters (1 October 1861)
- Instructions to Special Agents (1861)
- US Register of Officers and Agents – 1861
- List of US Post Offices – 1862 – (courtesy Theron Wierenga)
- Establishment and Discontinuances of Post Offices – 1864
- PMG Report – 29 April 1861
- PMG Report – 27 November 1861
- PMG Report – 28 February 1862
- PMG Report – 29 September 1862
- PMG Report – 12 January 1863
- PMG Report – 12 February 1863 (Supplemental)
- PMG Report – 7 December 1863
- PMG Report – 2 May 1864
- PMG Report – 7 November 1864