Westinghouse Automatic HF Telephone System for Carrier-Current Communication Over Utility Power Lines
name: label: Collection Creator
content: Laport, Edmund A.
setName: label: See more items in
content: Edmund A. Laport Collection
label: See more items in
content: Edmund A. Laport Collection / Series 1: Photographs
unitdate: label: Date
content: 1925
container: label: Container
content: Box 1, Folder 14
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials