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Subjects
- Transportation -- History -- 20th century.[remove]3
- Lincoln Highway.2
- Rivers--Surveying1
- Automobile travel -- United States.1
- Baseball in America1
- Battering Rams1
- Bridges, Suspension1
- Bridges--Design and construction--Costs1
- Bridges--Law and legislation1
- Bridges--Pennsylvania--Schuylkill River1
- Canals, Interoceanic1
- Canals--Design and construction--Costs1
- Canals--rates and tolls1
- Civil Engineering--Early works to 18501
- Civil Engineering--History1
- Economics--Transport1
- Lincoln Highway Association -- New Jersey.1
- Lincoln Highway Association -- New York (State)1
- Lincoln Highway Association.1
- Mountain Railroads--United States1