Tamalpais Valley Railroad

Model Railroad Podcast Show - A great podcast about model railroading
Model Railroad Hobbyist - New online e-zine. A demo issue is available and looks pretty cool.
Black River Subdivision Blog - Will has a lot of interesting things to say about layout design and such
Joe Fugate's Siskiyou Line - A source of major inspiration for my SP modeling
Modelrailroading.wordpress.com - A lively and humorous blog

two guys and sum trains dot com - Lots of how-to's and forum activity
ModelRailroads.net - Model Railroad resource directory
Railroad Model Craftsmen - Web site for the magazine
NMRA - National Model Railroad Association - join and support the hobby!
LDSIG - Layout Design Special Interest Group of the NMRA
Walthers - The best selection of model railroading supplies and goods.
San Diego Model Railroad Museum - The Tehachapi layout is top quality.
MRRForums.com - Forum for modelers and manufacturers to share ideas.
Fast Tracks - Tools for hand-laid tracks

Reality Reduced TV - Well produced video series on N scale Model Railroading.
Joe Fugate DVDs - Professional quality how-to videos based on Joe's Siskiyou Lines.

Fine Scale Miniatures - FSM are the Gold Standard Kits - also check out the amazing Franklin and South Manchester Layout
FOS Scale Limited - High-quality kits with a lot of character
LaserKit - They have Southern Pacific Standard Depot kits (as well as a lot of other cool kits) - I've built all of the SP depots.

Java Model Railroad Interface (JMRI) - Still poking numbers into CVs to program your decoders?  Then you need JMRI's DecoderPro and you will wonder how you ever got along without it :-)
Tony's Trains - A great source of chips and parts for DCC as well as discount locomotives.
OpenDCC - Want to build your own DCC decoders?  Look here.

Hobby Central - Model Railroading and radio control in San Diego
Reed's Hobby Shop - Best model railroading hobby store in San Diego Area
Allied Model Trains - Huge model railroading hobby shop in Los Angeles
Whistle Stop - San Diego area Whistle Stop - expert advice and lots of books
The Original Whistle Stop - Best hobby shop for Southern Pacific models - in Pasadena
San Diego Hobby Shop Directory - Find hobby shops in your local area

ESPEE Models - Lots of information and resources for modeling the Southern Pacific
Southern Pacific Technical and Historical Society - Join and help save the history of the SP!
California State Railroad Museum in Sacramento
SP GP-9 5623 fan site
SP GP-9 5623 on Wikipedia
Dan's Wig-Wag site - a whole site devoted to these cool train crossing signals
SP Model Paint Colors - paint mixtures for modeling accurate SP color schemes
Sp Mountain Division Timetable
Mark Schutzer SP Modeling Site
Southern Pacific Cab-Forward Picture Gallery
More on SP Cab-Forwards