Science to aid in quieting city, microphone or electric ear
notes: label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Technology
label: Subject
content: Radio
setName: label: See more items in
content: Work and Industry: Photographic History
label: See more items in
content: Photography
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PG.67.88.00207
label: accession number
content: 270586
label: publisher number
content: CH506699"S"
label: catalog number
content: 67.88.00207
objectType: label: Object Name
content: glass plate negative
physicalDescription: label: Physical Description
content: glass plate (overall material)
label: Measurements
content: overall: 5 in x 4 in; 12.7 cm x 10.16 cm