Over the years, troves of images have been released into the public domain or under liberal licences. The most recent release is from the Metropolitan Museum of Art. (Search page)
Here is “The Church at Gloucester“by Childe Hassam (1918) and now in the public domain. The church is, of course, the Universalist church — the first in the Americas. John Murray was its pastor; Judith Murray, a founder, was an author and leading figure in Gloucester.