Only one postcard to include in this post, but I thought this effort was kind of interesting.
I recently found an online copy of an 1888 map of the Central Massachusetts Railroad:

Upon closer inspection, there were a couple of stops in Central Massachusetts that I didn't recognize by name -- Jefferson Station (still an active town with a post office); Muschopauge Station; and Coldbrook Station, which prompted some interesting results:

First, what was Jefferson Station is a partially restored, yet abandoned building today:

Second, Muschopauge Station, a part of Rutland, MA, had a large hotel and sanitarium in the area back in its day (later a Mental Hospital), however, I did find this postcard that shows the long gone station back in its heydey:

I couldn't find all that much about the Coldbrook Station (actually, Coldbrook Springs, Mass.) except that the post office was discontinued in 1931, then I found this memorial to the demise of the town in 1930:

All in all, quite an interesting study in three long abandoned Massachusetts train stations!