Plot: Kevin visits the Concord Museum, which houses one of the oldest collections of Americana in the country, including one of the lanterns that hung in the church on the night of Paul Revere's ride and several items relating to the life of local Concord resident Sam Staples, the man who built our project house. Tom and master plumber Ron Coldwell show Kevin the progress on the rough plumbing and how adding a shower at the last minute affected the layout of the first floor powder room