Restoring Window Sashes
Yes, they're worth fixing. Those old windows were built better (and from better wood) than anything you can buy today.
A restoration carpenter argues that old windows are often worth saving, then provides detailed instructions for stripping, repairing, painting, and glazing the sashes. A sidebar offers tips for removing old sash.
From Fine Homebuilding161
, pp. 84-89
March 1, 2004