relay, microphonic
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Photographic History
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.4046.20
label: catalog number
content: 4046.20
label: accession number
content: 129430
objectType: label: Object Name
content: Relay, Microphonic