Possible Johnson relatives
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 7: Robert Johnson / 7.1: Research Materials
unitdate: label: Date
content: 1880, undated
container: label: Container
content: Box 107, Folder 13
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials