Portland Cement Association
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 2: Operational Records / 2.2: Correspondence / Corporations
unitdate: label: Date
content: 1916-1918
container: label: Container
content: Box 4, Folder 8
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Text