Tubes - unidentified; missing 1941, one image numbered between 1942 & 1943
name: label: Collection Creator
content: Clark, George Howard, 1881-1956
setName: label: See more items in
content: George H. Clark Radioana Collection
label: See more items in
content: George H. Clark Radioana Collection / Series A: Thomas Coke KnightT RCA Photographs, circa 1902-1950 / 1.6: Radio Components (alphabetical)
container: label: Container
content: Box 417, Folder 2
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents note
content: Green numbers on photoprints: 1923-1949