"Recent Developments in Magnetic Sound Recording," Journal of the Society of Motion Picture Engineers, 28:5
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 3: Writings and Speeches
unitdate: label: Date
content: 1937 May
container: label: Container
content: Box 32, Folder 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials