Restore a Wood Window Sash (PDF) - article from Fine Home Building that explores the steps in restoring an old wood sash
Overview of Wood Windows: Tips for Restoration (PDF) - National Trust for Historic Preservation
Repair, Retrofit and Replacement of Historic Windows (PDF) - from Preservation Pennsylvania
New England Window Restoration Alliance - a commitment to the preservation and restoration of historic wood windows
Preservation Massachusetts - a network of private and public historic preservation organizations
Ask your house painter! Many homeowners have reported that good, knowledgeable house painters have the skills to repair old windows that may be most affordable.
Window Preservation Alliance
New England Wood Window Restoration and Repair in Framingham
Cleary Window Restoration
Masterworks Painting and Restoration Inc.
List of Window Repair Shops (PDF)
Window Restoration Products (PDF)
A list of Articles and Resources (PDF)