Engineering
name: label: Collection Creator
content: Tyrrell, Henry Grattan, 1867-1948
label: Collection Author
content: Tyrrell, Mary Maude Knox
setName: label: See more items in
content: Henry Grattan Tyrrell and Mary Maude Knox Tyrrell Papers
label: See more items in
content: Henry Grattan Tyrrell and Mary Maude Knox Tyrrell Papers / Series 3: Business Records
unitdate: label: Date
content: 1899
label: Date
content: 1902
label: Date
content: 1905
label: Date
content: 1923
label: Date
content: 1917-1919
label: Date
content: 1935
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0948, Subseries 3.1
objectType: label: Type
content: Archival materials