Apparatus Type Numbers
name: label: Collection Creator
content: Clark, George Howard, 1881-1956
setName: label: See more items in
content: George H. Clark Radioana Collection
unitdate: label: Date
content: 1916-1931
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0055, Series 2
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents note
content: Series 2 consists of a memorandum from Clark to RCA and GE recommending the adoption of the Government's type number system for all American radio companies, and specifically recommending the Navy type numbering system.