Mountain States Telephone and Telegraph, Educational Department, Plant Course 3, Private Branch Exchanges
name: label: Collection Creator
content: General Electric Company
setName: label: See more items in
content: General Electric Corporate Research Department Collection
label: See more items in
content: General Electric Corporate Research Department Collection / Series 2: Management Materials
unitdate: label: Date
content: 1916
container: label: Container
content: Box 6, Folder 6
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials