Operator Code Books/Cipher Books
name: label: Collection Creator
content: United Telegraph Workers.
label: Collection Creator
content: Western Union Telegraph Company
setName: label: See more items in
content: Western Union Telegraph Company Records
label: See more items in
content: Western Union Telegraph Company Records / Series 13: Operating Records
unitdate: label: Date
content: 1880-1917
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0205, Subseries 13.4
objectType: label: Type
content: Archival materials