Hall Signal Company, Catalogue No. 4 and Price List of Automatic Electric Disc and Semaphone Signaling Apparatus, 1901
name: label: Collection Collector
content: National Museum of American History (U.S.). Division of Work and Industry
setName: label: See more items in
content: Railroad Trade Literature Collection
label: See more items in
content: Railroad Trade Literature Collection / Series 1: Trade Literature / 1.87: Hall Signal Company
container: label: Container
content: Box 50, Folder 4
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials