Concreting tunnel, arch, side walls
name: label: Collection Creator
content: Allis-Chalmers
label: Collection Creator
content: S. Morgan Smith Company
setName: label: See more items in
content: S. Morgan Smith Company Records
label: See more items in
content: S. Morgan Smith Company Records / Series 3: Glass Plate Negatives
unitdate: label: Date
content: 1912
container: label: Container
content: Box 47, Item 280
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives