Power Ports Sign Compan
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 / 1.169: Power Ports Sign Company, Quality Signs for the Railroad and Transportation Industry
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials