Western Electric type U relay telephone switch
name: label: maker
content: Western Electric
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Bell Telephone Laboratories
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315082.20
label: accession number
content: 215003
label: catalog number
content: 315082.20
objectType: label: Object Name
content: Relay Telephone Switch
label: Object Name
content: telephone switch