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Civil engineers 11

Bridges 10

Civil engineering 9

Photographs 8

Notebooks 7

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Truss bridges 5

Bridges -- Design and construction 4

Railroad bridges 4

Scrapbooks 4

Iron and steel bridges 3

Structural engineering 3

Aluminum Bridges 2

Baldwin Universal Testing Machine 2

Bridge engineering 2

Bridges -- Pennsylvania 2

Bronx (New York, N.Y.) 2

Civil engineering--Study and teaching 2

Civil engineers. 2

Environmental Engineering 2

Fritz Engineering Laboratory. 2

Railroad engineering 2

Railroads 2

Reinforced concrete construction 2

Susquehanna River. 2

Wooden bridges 2

Adams County (Ohio) 1

Airships 1

Albany (N.Y.) 1

Allegheny River 1

American River Bridge, California 1

Auburn, New York 1

Authors 1

Beasley Fork Bridge, Ohio 1

Belleair (Fla.) 1

Belleview Bridge, Belleair, Florida 1

Benjamin Franklin Bridge (Philadelphia, Pa.) 1

Bethlehem (Pa.) 1

Bethlehem (Pa.) -- History 1

Bettendorf Bridge 1

Binghamton, New York 1

Blair Bridge, Montgomery County, Maryland 1

Blueprints 1

Bridge builders - Nineteenth century 1

Bridges - Railway arch truss 1

Bridges - Suspension 1

Bridges - Whipple truss 1

Bridges - iron - Nineteenth century 1

Bridges -- -- New Hampshire 1

Bridges -- Connecticut River 1

Bridges -- Delaware River (N.Y.-Del. and N.J.) 1

Bridges -- Massachusetts 1

Bridges -- New Jersey -- Camden 1

Bridges -- Pennsylvania -- Philadelphia 1

Bridges -- Peru -- Nineteenth century 1

Bridges -- Testing 1

Bridges -- United States 1

Bridges -- Vermont 1

Bridges – Québec (Province) -- Québec. 1

Bridges – Switzerland 1

Bridges, iron highway 1

Bridges-- 1

Bridges; U.S. Bridges; Truss Bridges 1

Brooklyn Bridge (New York, N.Y.) 1

Bruce G. Johnston Professorship 1

Bucktail Trail 1

Caissons 1

Calumet Bridge 1

Canadensis (Pa.) 1

Canals 1

Cayuga County, New York 1

Cemetery Bridge, Benton Harbor, Michigan 1

Certificates 1

Chenango Canal, New York 1

Chesapeake and Ohio Canal (Md. and Washington, D.C.) 1

Chester (Pa.) 1

Chromolithograph illustrations 1

Cicott Street Bridge, Logansport, Indiana 1

Clinton County, Pennsylvania 1

Clippings (information artifacts) 1

Columns 1

Composite materials -- Testing 1

Compressed air foundations 1

Construction drawings. 1

Construction workers 1

Correspondence 1

Correspondences 1

Cuzco (Peru) 1

Dams 1

Dams - arch 1

Davenport Bridge 1

Delaware River (N.Y.-Del. and N.J.) 1

Delaware River Bridge (Philadelphia, Pa.) 1

Diplomas 1

Drawings (visual works) 1

East River, New York 1

Elwha River 1

Eney deformeter 1

Engineering 1

Engineering drawings 1

Erie Canal (N.Y.) 1

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Names

Beedle, Lynn S. 2

Bethlehem Steel Company 2

Bethlehem Steel Corporation 2

Eney, William J. 2

Fritz, John, 1822-1913 2

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Grace, Eugene G. (Eugene Gifford), 1876-1960 2

Lehigh University 2

Merriman, Mansfield, 1848-1925 2

Sutherland, Hale, 1884- 2

Texas and New Orleans Railroad Company 2

Unknown 2

Ambursen, Nils Frederick, 1876-1953 1

American Cable Company, Inc. 1

American Railway Engineering Association 1

Astin, Allen Varley 1

Batcheler, Bowen & Wolverton 1

Battey, Edward 1

Beckel Iron Foundry 1

Bewley, Loyal Vivian 1

Bodine, Alfred V. 1

Bugbee, Bertie H. 1

C. I. Hood & Co. Lowell, Mass 1

Carroll, Katie 1

Carroll, Minnie A. 1

Cartwright, Ellen 1

Caryle, Minnie 1

Champion Bridge Company 1

Chester Creek Bridge 1

Concrete Steel Bridge Company 1

Conradi, G.A. 1

Cornell University 1

Dallman, Martin 1

Delaware Bridge Joint Commission of the States of Pennsylvania and New Jersey 1

Dillard, Sophia E. 1

Donovan, Mary A. 1

Dromgoold, Lizzie M 1

Dromgoole, Agnes J. 1

Dromgoole, Mary E. 1

Durkee, Jackson Leland 1

Durkee, Judith 1

E. W. Hoyt & Co. Lowell, Mass 1

Errera, Samuel Joseph. 1

Finn, Bernard S. 1

Flowers, R. C. 1

Fritz Engineering Laboratory 1

G. E. Marsh & Company 1

Gallagher, Robert Taylor 1

Garcelon, H. S. 1

Gardner, David I. 1

Gibson, Glenn James 1

Gillooley, Dora M. 1

Glyillory, Dorra 1

Grossart, Lewis John Henry 1

H. S. Garcelon Iodine & Medicine Dayville, Conn. 1

Harpel, Kenneth 1

Harrington, Howard & Ash Engineers 1

Havercamp's Photographs 1

Hellertown Historical Society 1

Henry Kern Photographer 1

Henry, Nellie A. 1

Herney, Annie 1

Historic American Buildings Survey/Historic American Engineering Record 1

Hubbard, Frederick 1

Hubbard, Frederick, 1817-1895 1

Hudson, Clarence Walter 1

Jacoby, Henry Sylvester, 1857-1955 1

Johnston, Archibald, 1865-1948 1

Johnston, Bruce Gilbert, 1905- 1

Karakash, John J. 1

Keim, Rollin Reuben 1

Keystone State Construction Company 1

King Bridge Company Cleveland, Ohio 1

King Iron Bridge Company 1

King Iron Bridge and Manufacture Company 1

King, George E. 1

King, Harry W. 1

King, James A. 1

King, Norman C. 1

King, Zenas 1

Knapp & Company New York 1

Lee, Mabel 1

Lehigh Coal and Navigation Company 1

Lehigh University – Students. 1

Lehigh University. Department of Civil Engineering 1

Liscomb, Lemuel F., 1841-1916 1

Louisville and Portland Canal Company 1

Luten Bridge Company 1

Luten Engineering Company 1

Luten, Daniel B., 1869-1946 1

Lynach, Rosie A. 1

M. Deveraux & Son, Charleston, West Virginia 1

Martin, Edward, 1879-1967 1

McAlpine, Charles S. 1

McAlpine, William J. (William Jarvis) 1

McClintic-Marshall Corporation 1

Melia, Annie 1

Mellor, Emma 1

Moffett, Agnes L. 1

Moffett, Katie E. 1

Moffett, Willie A. 1

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