I was lucky enough to get a copy of the Hopkinton Tax Book and Town Treasurer’s Report for 1902.
Here’s what it had to say about the Wells family:
Williams R. Wells is listed with his mother Martha Ann (Rogers) Wells with holding of real estate valued $4500 for which he paid $36 in taxes. Martha Ann is also listed separately with real estate valued at $3100 for which she paid $24.80 in taxes. In 1902, the real estate Williams would have owned (although it might not have been the only real estate) would have been his house that was located in what is now called Crandall Field in Ashaway.