Subject
- Georgetown Barge, Dock, Elevator, and Railway Company21
- Railroad finance20
- Columbia Institution for the Deaf and Dumb (1865-1911)19
- Chesapeake and Potomac Telephone Company18
- Deaf education18
- Government employees and officials17
- Telephone companies17
- Union Pacific Railroad Company17
- Wages and salaries17
- Washington Interurban Railway Company17
- Freedmen's Hospital (Washington, D.C.)16
- Psychiatric hospitals16
- United States. Department of the Interior. Pension Office16
- Hospitals15
- Loans15
- Military pensions15
- St. Elizabeth's Hospital (District of Columbia)15
- Boy Scouts of America14
- National banks (United States)14
- National parks and reserves14