Comparative Statistical and Cost Data on Coal Mining and Preparation
name: label: Collection Author
content: Lehigh Coal and Navigation Company
setName: label: See more items in
content: Lehigh Coal and Navigation Company Records
unitdate: label: Date
content: 1873 - 1939
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0071, Series 15
objectType: label: Type
content: Archival materials