May Day
name: label: Collection Donor
content: Bethlehem Steel Corporation
label: Collection Manufacturer
content: Consolidation Coal Company
label: Collection Manufacturer
content: Pittsburgh Consolidation Coal Company
setName: label: See more items in
content: Pittsburgh Consolidation Coal Company photographs and other materials
label: See more items in
content: Pittsburgh Consolidation Coal Company photographs and other materials / Series 2: Photographs / 2.3: Glass Plate and Film Negatives / 2.3.20: #2844-#3020
unitdate: label: Date
content: 1930
container: label: Container
content: Box 90, Item 3004
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives