Letters to participants
name: label: Collection Collector
content: McCormick, Mack
setName: label: See more items in
content: Robert "Mack" McCormick Collection
label: See more items in
content: Robert "Mack" McCormick Collection / Series 3: Projects Files / 3.4: Smithsonian Institution
unitdate: label: Date
content: 1976
container: label: Container
content: Box 44, Folder 14
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials