Thanks to everyone for their suggestions. I really appreciate it. Since I had only one day, I could only visit one site, and I chose Old Sturbrigde Village. I was not disappointed! There were so many wonderful old barns and mills with the framing exposed. I saw many examples of joinery from Jack Sobon's recent series on traditional joinery. In particular, there was an example of an interrupted plate with canted purlin posts, including the struts parallel to the rafters. In Jack's article, he says that his drawing comes from a barn that was relocated. Any chance it's the same barn? CB.