Slag for concrete
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 3: Subject Files / 3.1: Alphabetical
unitdate: label: Date
content: 1911-1918 and undated
container: label: Container
content: Box 19, Folder 12
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Text