Mine car convesrion rate, Mammoth Vein and Primrose Vein
name: label: Collection Author
content: Lehigh Coal and Navigation Company
setName: label: See more items in
content: Lehigh Coal and Navigation Company Records
label: See more items in
content: Lehigh Coal and Navigation Company Records / Series 19: Printed Materials Relating to the Anthracite Industry
unitdate: label: Date
content: 1936 March 18
container: label: Container
content: Box 55, Folder 4
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials