http://www.free-mo.org/standard/
https://www.fremo-net.eu/en/modular-systems/h0-scale/h0-usa/h0-usanormen/
The above links may help. Good luck!
We are downsizing our home and, I am looking to move to a smaller layout type such as the Free-mo standard modules. I am interested in finding a printed copy of the Free-mo standards and, if there is a club or group of Free-mo modelers in the Portland, Oregon or Vancouver Washington area. All information and suggestions are welcome.
Capt Brigg FranklinPacific Cascade Railway in HO gauge;