The Massachusetts legislative redistricting committee posted electronic files of their final House district map. I haven’t had a chance to take a close look yet, but during lunchtime today I downloaded the files and did a quick import into an interactive map using the R programming language, if you want to take a look.
I tried to get the projection correct when overlaying the map, but I can’t guarantee exact boundary accuracy.
Like the other map, you can use the search icon at top left of the map to look for an address. (Start typing the address and wait for options to appear, then choose one; this is not like Google Maps where you can enter numerous variations of the same address).