Union Switch & Signal code control system component
date: label: date made
content: ca. 1930
label: date made
content: ca 1930
name: label: maker
content: Union Switch and Signal Company
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.334498
label: catalog number
content: 334498
label: accession number
content: 312192
objectType: label: Object Name
content: Control Unit
label: Object Name
content: railway controller
label: Other Terms
content: Control Unit; Telegraphy