WP 3504 West approaches the lead at Charter Way as it prepares to enter Stockton Yard. No. 3504 wears one of several paint schemes WP tried before settling on the all-orange nose. 3504 was built i... (more)

GP40 3504, sporting a Nathan M5 horn in the center of its cab roof, brings a westbound freight toward Stockton Yard after a trip down the Central Valley from Oroville.