Field strength, Smithsonian Guide, postcards, angle of radiation, Solar Ephemeris, aluminum welding
name: label: Collection Author
content: Roess, Harold R.D. (radio engineer)
setName: label: See more items in
content: Harold R. D. Roess Papers
label: See more items in
content: Harold R. D. Roess Papers / Series 3: Radio Materials
container: label: Container
content: Box 5, Folder 3
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials