The 125.57 and 34.0 transmitters are in Shelton so it makes sense. The BOSOX 47 and Athens 38 x-mitters are in Woodstock I believe. Along that route, you should be able to get 128.1 (PWL06), 124.85 (PVD34) and 127.65 (CTR07) since they have x-mitters at the same location(s).
Yes, it's a nice field and I like the ILS approach to 6 and 24. There is a neat museum in Windsor Locks called NEAM (New England Air Museum) that has some real neat things. They re-broadcast Approach and Tower transmissions live as well.