Hughes carbon rod microphone
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from International Business Machines, Inc., William J. Hammer Collection
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320545.02
label: catalog number
content: 320545.02
label: accession number
content: 241402
objectType: label: Object Name
content: microphone