Patents
name: label: Collection Creator
content: Duncan, Donald F., Jr.
label: Collection Creator
content: Duncan Yo-Yo Company.
setName: label: See more items in
content: Duncan Family Yo-yo Collection
label: See more items in
content: Duncan Family Yo-yo Collection / Series 2: Playmaxx
unitdate: label: Date
content: 1974-1997
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0807, Subseries 2.7
objectType: label: Type
content: Archival materials