Because
name: label: Collection Creator
content: Ellington, Duke, 1899-1974
setName: label: See more items in
content: Duke Ellington Collection
label: See more items in
content: Duke Ellington Collection / Series 1: Music Manuscripts / 1.2: Music Manuscript Sketchbooks / Tom Whaley
container: label: Container
content: Box 450, Folder 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials