Correspondence, Memoranda, Reports: Exhibits #173-182
name: label: Collection Creator
content: Sperry Co.
setName: label: See more items in
content: Sperry Rail Detector Car Collection
unitdate: label: Date
content: January 1935 - April 1938
container: label: Container
content: Box 1, Folder 5
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials