R.L. Ross and Company LTD, Ross "Pop" Safety Valve, 1955
name: label: Collection Collector
content: National Museum of American History (U.S.). Division of Work and Industry
setName: label: See more items in
content: Railroad Trade Literature Collection
label: See more items in
content: Railroad Trade Literature Collection / Series 1: Trade Literature / 1.184: Rogers Locomotive and Machine Works
container: label: Container
content: Box 64, Folder 6
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials