The author gratefully acknowledges the invaluable assistance of Beth Savage, National Register of Historic Places. The author is also indebted to Rebecca Shiffer of The Society for Commercial Archeology, and to other colleagues in the cultural resources programs of the National Park Service, sign artists in private practice, and professionals and preservationists in a number of organizations. These include staff of the Technical Preservation Services Branch, directed by H. Ward Jandl, especially Kay Weeks, Anne Grimmer, Sharon C. Park, and Thomas C. Jester; staff of the National Park Service Regional Offices, especially Michael Crowe, Thomas Keohan, Catherine Colby and Christopher Jones; deTeel Patterson Tiller and Stephen Morris, Interagency Resources Division; Caroline Bedinger, Historic American Engineering Record; Catherine Lavoie and Sara Leach, Historic American Buildings Survey, and Stan Fowler of Glen Echo Park. Significant contributions were also made by Peter Phillips, Yuma County Planning Department; Pratt Cassity of the National Alliance of Preservation Commissions; Betsy Jackson, Doug Loescher and Kennedy Smith of the National Trust for Historic Preservation; Richard Longstreth, George Washington University; Richard Wagner, David H. Gleason Associates, Inc.; Michael Jackson, Illinois Historic Preservation Agency; Vance Kelley, Kansas State Historical Society; William Pencek, Maryland Historical Trust, Chere Jiusto, Montana Historical Society, and Gerron Hite and Stan Graves, Texas State Historical Commission (the latter on behalf of the National Conference of State Historic Preservation Officers). The following artists and professionals active in the sign industry offered publications, photographs, technical material, and advice: Lynn Baxter and Tod Swormstedt, ST Publications; Kent Smith, Kent Smith Signs; Craig Kraft, Kraft Studios; Larry Kanter, Neon Projects; Len Davidson, Davidson Neon Design; Thomas Ellis, The Enamelist Society; Timothy Pugh, the Porcelain Enamel Institute; William Adair, Goldleaf Studios.

This publication has been prepared pursuant to the National Historic Preservation Act of 1966, as amended, which directs the Secretary of the Interior to develop and make available information concerning historic properties. Technical Preservation Services (TPS), Heritage Preservation Services Division, National Park Service prepares standards, guidelines, and other educational materials on responsible historic preservation treatments for a broad public.