Official Opinions of the Solicitor for the Post Office Department

Publisher: Washington: U.S. Govt. Printing Off.,
Coverage: 9 v. Washington: U.S. Govt. Print. Off, 1885-1952; Title Varies: Vol. 1-5, 1873-1914 as Official Opinions of the Assistant Attorneys General for the Post Office Department

Volumes:

9 (1936-1951)
8 (1929-1936)
7 (1920-1929)
6 (1914-1920)
5 (1908-1914)
4 (1905-1908)
3 (1892-1905)
2 (1885-1892)
1 (1873-1885)