Bell Telephone Laboratories, Inc: D-165529 Sound Spectrograph Schematic
name: label: Collection Creator
content: Kopp, Harriet Green, 1917-
setName: label: See more items in
content: Harriet Green Kopp Papers
label: See more items in
content: Harriet Green Kopp Papers / Series 1: Documents
unitdate: label: Date
content: 1944-02-18
label: Date
content: 1944-08-17
container: label: Container
content: Box 2, Folder 4
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.1130, File KOPP_002BP
objectType: label: Type
content: Archival materials
label: Type
content: Graphic Materials
scopecontent: label: Scope and Contents note
content: Bell Labs Number = ES-804380