I just wanted to add a link to a project I worked on at Mount Vernon a few years back. It was a reconstruction of one of Washington's original Slave cabins for a new exhibit.
I also worked on the reconstructed Distillery. While at Museum Resources we supplied all of the lumber for the project, and installed the nearly 60 sq. juniper roof. I spent to better part of a week fanning the valley shingles in 100+ degree heat.