NRHS L Union Pacific Cheyenne Big boy 4015 June 8 1956 Dave Sweetland MD
Home » Union Pacific Railroad | Cheyenne, Wyoming | Class 4-8-8-4 #4015 Big Boy steam locomotive | June 8, 1956 | Dave Sweetland photograph | Richard Prince Collection » NRHS L Union Pacific Cheyenne Big boy 4015 June 8 1956 Dave Sweetland MD
August 31, 2025 by Mitch Dakelman
National Railway Historical Society, Inc.
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