Bridges
name: label: Collection Creator
content: National Museum of American History (U.S.). Division of Mechanical and Civil Engineering
label: Collection Creator
content: Mechanical and Civil Engineering, Division of
label: Collection Creator
content: National Museum of American History (U.S.). Division of Work and Industry
setName: label: See more items in
content: Division of Mechanical and Civil Engineering Glass Plate Negatives
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.1089, Series 2
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: Glass plate negatives documenting civil and mechanical engineering activities related to bridges. Few of the images are identified, but named bridges are the Boulder Park Bridge, Middletown Draw bridge, and the Easton Suspension Bridge. Bridge types include burr truss, bowstring truss, skew truss, steel truss, chain, swing draw, swiss draw, bascule, and suspension. The glass plates are 8 in x 10 in, 4 in x 5 in, and  6.5 in  x 8.5 in.