The Rider's Hobby family tree is kind of complicated. Here is how I recall it.
First, you have the stores that are the straight-line descendents of Ken Rider's first shop, converted from a pen and typewriter shop in the late 1940s:
* Ann Arbor (the original, downtown, closed)
* Canton (closed)
* Jackson (this was adjacent to warehouse space they acquired in the former Ginsberg's Surplus building near the airport, closed)
* Kalamazoo (closed)
During the later Jack Busch/Mike Busch era, they expanded by offering franchises. These include(d):
* Toledo (closed)
* A store somewhere in Texas (if I remember correctly, it has been gone a number of years)
* Sterling, Virginia
Then there are Mike Allen's Capitol Cities Hobby stores:
* East Lansing, then Lansing (closed)
* Madison Heights (closed)
* Grand Rapids
* Utica (closed)
Hobby retail is a tough business, and it hasn't been getting any easier as the number of shop closings over the past ten years attests.