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Author/Creator
- American Bell Telephone Company1
- Ball, Lewis Heisler, 1861-19323
- Capital Traction Company1
- Capper, Arthur, 1865-19514
- Chesapeake and Potomac Telephone Company26
- Georgetown Barge, Dock, Elevator, and Railway Company1
- Georgetown Gas Light Company (Washington, District of Columbia)1
- Grout, William W. (William Wallace), 1836-19021
- King, William Henry, 1863-19492
- Potomac Electric Power Company1
- Public Utilities Commission of the District of Columbia17
- Rayburn, Sam, 1882-19612
- Union Transfer Company1
- United States3
- United States. Congress. House37
- United States. Congress. House. Committee on Interstate and Foreign Commerce. (1892- 1981)2
- United States. Congress. House. Select Committee To Investigate the District of Columbia Gas and Telephone Companies1
- United States. Congress. Senate16
- Washington Gas Light Company1
- Washington Interurban Railway Company1