(3) Livingston and Campbell setting constant switches no later than August 1944.
name: label: Collection Creator
content: Hopper, Grace Murray, 1906-1992
setName: label: See more items in
content: Grace Murray Hopper Collection
label: See more items in
content: Grace Murray Hopper Collection / Series 3: Photographs at Harvard
container: label: Container
content: Box 3, Folder 1
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials