David: This Old House Episode #2705
Landscape contractor Roger Cook installs 200 running feet of pre-cast concrete to create a retaining wall that will define the perimeter of the new backyard. Inside the house, wallpaper historian Richard Nylander helps host Kevin O'Connor date and evaluate the historic wallpaper throughout the house, while general contractor Tom Silva frames for a new window in an old wall. Kevin makes a trip to Cambridge, Massachusetts, to see how three 19th century buildings are being moved as part of a construction project at Harvard Law School. The million-dollar move, which has been planned for five years, requires the buildings to be lifted and rolled down Massachusetts Avenue on hydraulic dollies steered by remote control.

Ask This Old House Episode #605
Plumbing and heating expert Richard Trethewey helps a pair of homeowners with a jammed kitchen garbage disposer. Then Richard, along with host Kevin O'Connor, general contractor Tom Silva and landscaping contractor Roger Cook ask, "What is it?" Then, Kevin learns from a painting expert how to remove exterior paint from cedar siding. Back in the loft, Tom and Richard show Kevin the do's and don'ts of cutting holes and notches in joists.