The Pennsy Modeler
formerly Keystone Crossings

Pennsylvania Railroad
on FaceBook
The Alphabet Route
NYC&StL | W&LE | P&WV | WM
RDG | CNJ | L&HR | NYNH&H
 
Jerry Britton's
PRR Middle Division 
Jerry Britton's
PRR Middle Division
on Patreon
Jerry Britton's
PRR Middle Division
on FaceBook

STS-Users
on groups.io
Shipper-driven Traffic Simulator

Jerry Britton's
Pennsylvania Midland RR

CATS-Users
on groups.io 
Computer Automated Traffic System
Huntingdon and Broad Top Mountain Railroad
on FaceBook
Bellefonte Central Railroad
on FaceBook
 Kishacoquillas Valley Railroad
on FaceBook 
CPS RPM
Central Pennsylvania Shortlines
Railroad Prototype Modelers Meet
CPS RPM
on FaceBook
Keystone Rails 
on YouTube