Keystone Bridge Company, Pittsburgh, Pennsylvania
name: label: Series Creator
content: Warshaw, Isadore, 1900-1969
setName: label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Bridges
label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Bridges / 1: Bridge Builders and Suppliers of Bridge Construction Materials
unitdate: label: Date
content: undated
container: label: Container
content: Box 1, Folder 10-11
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: Illustrated album