Associate Member Web Sites:
Gilbert Historical Museum – www.gilbertmuseum.com
Arizona Railroad Historical Society -  https://azrhs.com/
Arizona Railway Museum - www.azrymuseum.org

Other railroad web sites:
Santa Fe Railway Historical and Modeling Society – www.atsfrr.com
Southern Pacific Historical & Technical Society – www.sphts.org
The Galloping Goose Historical Society - http://gallopinggoose5.com/
Texas Railroad History - http://www.homeadvisor.com/r/texas-railroad-history/ 
​Soo Line Railroad Historical Society - https://sooline.org/

Other model railroad sites:
Arizona Division - Clubs - https://azdiv-nmra.org/home/index.php
Scottsdale Model Railroad Club - https://scottsdalemrhs.org/
Thunderbird Model Railroad Club - http://www.thunderbirdmodelrrclub.com/ 
National Model Railroad Association (NMRA) - www.nmra.org
Northern Minnesota Railroad Heritage Association -www.northerntrackersrrclub.com

​Model Railroad Resources (used by GMRC)
An Affair with Trains - www.aawtrains.com
Con-Cor - https://www.con-cor.com/
Hobby Depot – www.thehobbydepot.com 
Micro-Mark - http://www.micromark.com
NightScope IR Detectors - www.bouldercreekengineering.com
North Coast Engineering DCC Systems - www.ncedcc.com
Northwest Short Line - www.nwsl.com
Structures and Trains by Fred - sales@structuresandtrainsbyfred.com
​Tony's Train Exchange DCC Controls - www.tonystrains.com