1884, Concrete Mixer Pipe, 70. Philadelphia
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
label: See more items in
content: Division of Mechanical and Civil Engineering Glass Plate Negatives / Series 5: Machinery
unitdate: label: Date
content: 1920
container: label: Container
content: Box 4, Item 17
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives