Synchronous Multiplex Telegraphy, undated
name: label: Series Creator
content: Warshaw, Isadore, 1900-1969
setName: label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Telegraph
label: See more items in
content: Warshaw Collection of Business Americana Subject Categories: Telegraph / Business Records, Marketing Material, Trade Literature, and Other / 1.7: Publications
container: label: Container
content: Box 6, Folder 10
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials