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Special Interest Groups

A Special Interest Group (SIG) is an independent, not-for-profit, membership group organized to provide a forum for the exchange and collection of railroad prototype and/or model railroad information about specific topics. This page contains information about railroad and model railroad organizations which have chosen to join the NMRA Special Interest Group Program.

For information about creating an NMRA SIG, or registering an existing organization as an NMRA SIG, please consult the SIG Program Guide then contact the SIG Program Coordinator at:

Doug Harding - SIG Program Coordinator
National Model Railroad Association
PO Box 574
Keosauqua IA 52565-0574

SIG Program Documents:

(Note: SIG documents in postscript format have been discontinued. We apologize for any inconvenience)

Special Interest Groups:

Note: there are a number of broken links below. We are in the process of trying to update them, but if you have a new link, please use the contact page to let us know. Thanks.