35, Nine months of steady wear by a mail carrier. [comparing a leather sole and a rubber sole]
name: label: Collection Creator
content: Missionary Catechists of Divine Providence.
label: Collection Creator
content: Massachusetts Institute of Technology (MIT) Civil Engineering Department
label: Collection Creator
content: Underwood and Underwood
setName: label: See more items in
content: Division of Work and Industry Lantern Slide Collection
label: See more items in
content: Division of Work and Industry Lantern Slide Collection / Series 2: Extractive Industries / 2.6: Rubber / 2.6.2: Rubber -- General, Set Number One 1-70
unitdate: label: Date
content: undated
container: label: Container
content: Box 92, Item 26
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Photographs