The author gives particular thanks to Peter Palmquist and James Holliday for their continuous advice, suggestions, and enthusiastic support regarding photographic history, California history and the general layout of this book.
Thanks are also due to Gary Kurutz, curator of special collections at the California State Library; Jennifer Watts, associate curator of photographs at The Huntington Library, for her numerous letters and assistance in identifying persons in the Hart photographs; Tony Troncale, photography collection, New York Public Library; Kathryn Totten, Special Collections, University of Nevada Library; Maja Keech, Prints and Photographs division, Library of Congress; KD Kurutz, curator of education, Crocker Art Museum; Walter Gray, director, and Ellen Halteman, librarian, California State Railroad Museum for providing information on early California railroad construction; James Henley, manager, Sacramento Archives and Museum Collection Center for information on Sacramento history and access to the extensive photographic collection at the Archives.
Special thanks to Pauline Grenbeaux Spear who did so much early research on the life of Alfred Hart and who was the first to plan a history of his life. To Glen Willumson who completed Pauline's work and shared much of his research on Hart's railroad years; to Benjamin Biaggini, former president of the Southern Pacific Railroad who generously provided my first Hart views (on glass lantern slides) and many facts on the early history of the railroad; to Jeneane Crawford who worked tirelessly with me in taking, developing and printing the hundreds of photographs appearing here, as well as taking field notes and identifying locations on numerous trips along the CPRR route.
Barry Swackhamer permitted the photographing of many of his rare Hart stereographs appearing in Appendix A, and later proofread parts of the text and provided many of the correct railroad terms needed