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University of Notre Dame Mendoza College of Business 393 Notre Dame, Indiana 46556-0399 Dr. Georges Enderle John T. Ryan, Jr. Professor of International Business Ethics Mrs. Catherine D. Hostetler Director, Historic Preservation Commission 227 West Jefferson Blvd. South Bend, IN 46601 Dear Mrs. Hostetler, Phone: 574-631-5595 Fax: 574-621-5255 E -Mail: genderle@nd.edu November 6, 2007 Thank you for your letter of October 24, 2007 and the documentation on replacement windows, energy-saving opportunities, and invisible storm windows. I appreciate your providing me with additional information concerning my window problem. I would also like to thank you, Mr. Paul Hayden and Mr. Schoberg for taking time to visit and inspect my bay windows on October 2. I carefully studied your documentation and the conditions under which the Historic Preservation Commission would accept a proposal from me. Here are my specific responses: The article on replacement windows (in the Journal of Preservation Technology 36:4, 2005) conveys much valuable information about multiple aspects on the controversy of replacing windows versus restoring them. But, in my view, it does not succeed in solving the issue of my particular case. I agree with the authors that sustainability and authenticity are the two important criteria to address my window problem. Thus, I would expect that they fully apply to my situation by accounting for social, economic, and environmental benefits (as sustainability is defined on page 27). These include not only energy saving but also the quality of life in my house and the aesthetics of the exterior appearance of the bay windows. Neither aspect is address by this article. The second article on eneruv-saving onnortunities (in Home Energy Magazine Online September/ October 1997) claims "that `remove and replace' is not necessarily the way to go when it comes to old windows" (page 1). I agree with this. But it is noteworthy that the article does not state that "remove and replace' is never a reasonable solution. Unfortunately, the design of the field study discussed in the article is, strictly speaking, not applicable to my window problem. It does not include a comparison between, on the one hand, a restored window (single -pane window, without interior or exterior windows) and, on the other hand, a replacement window (double -pane, low -E), whereby weatherstripping is assured in both cases. Moreover, the study is ten years old and reflects the technological knowledge of a decade ago. In the meantime, window technology, undoubtedly, has improved substantially.