Unidentified photographs
name: label: Collection Creator
content: Bay State Gas Company.
setName: label: See more items in
content: Coal and Gas Trust Investigation Collection
label: See more items in
content: Coal and Gas Trust Investigation Collection / Series 3: Patents
unitdate: label: Date
content: undated
container: label: Container
content: Box 3, Folder 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials