He can look around the libraries, but there isn't anything about the tapestry, either because it isn't a historical art piece important to the town, or because the artist isn't well known enough to be featured in a book, it isn't clear.

The old couple at the occult shop will tell him that the other tapestry was purchased a long time ago, but the person who bought them wasn't interested in the entire set. The one he bought was undamaged, compared to the one Terry has, which could be a reason why. They believe the owner had moved away over fifty years ago ...whatever that means, since nobody can leave this world... but Terry won't be able to find the owner or the tapestry by pinpointing their locations either way.