Specifications for cut and cover method of construction (for section 3)
name: label: Collection Creator
content: Forgie, James
setName: label: See more items in
content: James Forgie Papers
label: See more items in
content: James Forgie Papers / Series 2: Projects / 2.82: Union Tunnel (for the Pennsylvania Railroad at Baltimore)
unitdate: label: Date
content: undated
container: label: Container
content: Box 59, Folder 10
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials