Back in about 1991 I requested a print-out of historic sites/listings cross-referenced with airports or hangars, and I received a list from the National Register people. I wanted to know about any listings of older airport structures. There weren't many, including the site of the Wright Brothers' flight which has no buildings, but it was interesting. I was writing a Section 106 document for Lansing's Capital City Airport West Ramp. It was great fun to research, enjoyable to photograph, satisfying to write, but they still tore the old hangars down to meet FAA requirements. Ilene