Promotional literature
name: label: Collection Creator
content: Begun, S. Joseph (Semi Joseph), 1905-1995
setName: label: See more items in
content: S. Joseph Begun Papers
label: See more items in
content: S. Joseph Begun Papers / Series 2: Professional Files / 2.5: Electro-Sonic Laboratories, Inc.
unitdate: label: Date
content: circa 1953-1959
container: label: Container
content: Box 12, Folder 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials