13. Looking North Over the Southern Pacific "B" Yard Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
14. Looking South from the Lower End of "A" Yard Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
15. Looking North from the Lower End of "A" Yard Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
16. Top End of the "C" Yard at Los Angeles Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
17. View of Interlocking Plant of the L.A. U.P.T Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
18. Looking Across the Top of the "C" Yard Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
19. View of Signals and Tracks of the L.A. U.P.T. Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
20. Looking North into the Lower End of "C" Yard Collection: U.S. President's Railroad Commission Photographs Set: Southern Pacific Railroad: Los Angeles SoPac Yards Location: Los Angeles, CA Southern Pacific Yards Format: Image Creator: Brotherhood of Locomotive Engineers (BLE) Photographer: Mahoney, B.J.
