Helmholtz, Herman, Biographical information
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 4: Biographies of Radio Personages, Technical / General "H" file, including secondary material on the following persons
container: label: Container
content: Box 14, Folder 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials