29 switching tube
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Hallam E. Mendenhall
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1988.0695.15
label: catalog number
content: 1988.0695.15
label: accession number
content: 1988.0695
objectType: label: Object Name
content: Vacuum Tube/Switching
label: Object Name
content: vacuum tube