61-33, To and Fro with Pendulums
name: label: Collection Creator
content: Herbert, Don (Donald Jeffry), 1917-2007
setName: label: See more items in
content: Mr. Wizard Papers
label: See more items in
content: Mr. Wizard Papers / Series 6: Educational Programs/Projects / 6.2: Watch Mr. Wizard
unitdate: label: Date
content: 1961
container: label: Container
content: Box 20, Folder 5
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials