When They Were New: Southern Pacific AC4400CWs - Railfan & Railroad Magazine

Brand-new General Electric AC4400CWs were the shot in the arm Southern Pacific needed to modernize its diesel fleet in the 1990s.

railroads - HistoricRail.com

Southern Pacific's Sprint to the Finish - Railfan & Railroad Magazine

ScaleTrains' 'Rivet Counter' General Electric AC4400CW Locomotives - Railroad Model Craftsman

GE Locomotive Modernization program expands under Wabtec

Southern Pacific Railroad: Map, History, Logo

PWRS Pacific Western Rail Systems

Athearn Delivers New Genesis 2.0 Southern Pacific Dash 9-44CW - Railroad Model Craftsman

Southern Pacific's Sprint to the Finish - Railfan & Railroad Magazine

ScaleTrains Plans to Release All-New GE AC4400CWs in HO, N scales - Railroad Model Craftsman