Solid entry in the old window / old house book genre. File this treatise under the don't believe everything the marketing entrepreneurs want you to believe category. Old windows can be rehabbed so that they are functionally beautiful and a long lasting part of your home. They have, literally, stood the test of time. Sidler's brief work provides the antithesis to the marketing which is sending fixable old windows into the landfills and replacing them with windows that probably won't last half the lifetime as the dumped cousins. This book tells why to rehabilitate old windows; not how to do it. That's a much longer book.