Author
ProQuest (Firm)
24 results
United States. Congress. House. Committee on the District of Columbia
9 results
United States. Railway Mail Service
5 results
United States. Congress. Senate. Committee on the District of Columbia
3 results
Baltimore and Ohio Railroad Company
2 results
Baltimore and Susquehanna Railroad Company
2 results
Gale (Firm)
2 results
Hughes, Geo. W. (George W.)
2 results
United States. Congress. House. Committee on Railways and Canals
2 results
United States. National Transportation Safety Board
2 results
United States. Post Office Department
2 results
Fowler, E. H.
1 results
General Service Schools (U.S.)
1 results
Geological Survey of Pennsylvania
1 results
Hedberg Maps, Inc
1 results
Julius Bien & Co
1 results
Magraw, R. M.
1 results
Maryland
1 results
Mingus, Scott L., Sr
1 results
Pouder, William P.
1 results
Swann, Thomas, 1805-1883
1 results
Swift, J. G. (Joseph Gardner), 1783-1865
1 results
U.S. Coast and Geodetic Survey
1 results
United States. Congress. House
1 results
United States. Congress. House. Committee on Claims
1 results
United States. Congress. House. Committee on Interstate and Foreign Commerce
1 results
United States. Congress. House. Committee on Military Affairs
1 results
United States. Congress. House. Committee on Naval Affairs
1 results
United States. Congress. Senate. Committee on Commerce
1 results
United States. Congress. Senate. Committee on Interstate Commerce
1 results
United States. War Department
1 results
Winans, Ross, 1796-1877
1 results
Wingert, Cooper H.
1 results
Yellott, Coleman, 1821-1870
1 results