Allegheny County Authority, bridge stone
name: label: Collection Creator
content: Cummings, Robert A., 1866-1962
setName: label: See more items in
content: Cummings Structural Concrete Company Records
label: See more items in
content: Cummings Structural Concrete Company Records / Series 1: Biographical / 1.2: Professional Organizations
unitdate: label: Date
content: 1935
container: label: Container
content: Box 1, Folder 6
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Text