Atomic clock promotional material
name: label: Collection Author
content: Lyons, Harold, Dr., 1913-1998
label: Collection Donor
content: Lyons, Sherrie
setName: label: See more items in
content: Harold Lyons Atomic Clocks Collection
label: See more items in
content: Harold Lyons Atomic Clocks Collection / Series 5: Collected Background Research Materials
unitdate: label: Date
content: undated
container: label: Container
content: Box 5, Folder 4
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials