Surveying 18 Railroads 15 Surveys 8 Canals 3 Costs 3 Design and construction 3 Pennsylvania--Surveys 3 more ... Warrants 3 Deeds 2 Floods--Pennsylvania--Johnstown (Cambria County) 2 Forest nurseries 2 Genealogy 2 Ironwork 2 Land surveys 2 Stenographers 2 Bituminous coal 1 Boundary 1 Community centers 1 Cornwall and Phoenixville railroad 1 Delaware River Valley (N.Y.-Del. and N.J.) 1 Early works to 1850 1 Ethnic relations 1 Farm life 1 History 1 Human ecology 1 Interpersonal relations 1 Islands 1 Lease and release 1 New Jersey--Surveys 1 New York--Surveys 1 Old Rights 1 Old rights 1 Patents 1 Periodicals 1 Societies, etc 1 Surveys--Delaware 1 Surveys--Pennsylvania--19th century 1 Tioga railroad 1 less ...