Looks to be Zones 11,12 - 20,21,22,23 - 30 & 32.
Southern Pacific RR 1973 Santa Ana Branch SPINS PDF Pages on DVD
Southern Pacific RR Shasta Route Historical Description Div PDF Pages on DVD
Southern Pacific RR 1982 Sacramento Division Track Chart PDF pages on DVD
Southern Pacific RR 1982 Lafayette Division Track Chart PDF pages on DVD
Southern Pacific RR 1969 Houston Division Track Chart PDF pages on DVD
Southern Pacific RR 1974 San Fransisco Peninsula Dist 3 SPINS PDF pages on DVD
