Comparative Cost Data
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 15: Comparative Statistical and Cost Data on Coal Mining and Preparation
unitdate: label: Date
content: 1931
container: label: Container
content: Box 48, Folder 16
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials