During the extended time period I have been working on this book, I have had wonderful cooperation from staff members at numerous research facilities located in the United States, England, and Germany. The research facilities I visited and used as part of my investigation for this book included the following: Imperial War Museum, London; Battle of Britain Museum, Hendon; Coventry Cathedral Archives at the cathedral; Public Records Office (PRO) in Kew; National Archives and Record Service in Washington, D.C. and their Cartographic and Architectural Branch located in Alexandria, Virginia; the Command and General Staff College Library at Fort Leavenworth, Kansas; the Army War College, Carlisle Barracks, Pennsylvania; and the USAF Historical Research Center at the Air War College at Maxwell AFB, Montgomery, Alabama. To the staff members at these institutions who provided me with so much help and assistance, my sincere appreciation. These individuals did much to help make my research efforts more productive.
Two facilities that I did not have the opportunity to visit but with which I corresponded extensively were the German State Archives, the Bundesarchiv, in Freiburg, Germany, and the Mass-Observation Archives located at the University of Sussex, Falmer, Brighton. The help of the reference staffs at both of these organizations was truly critical for my research, and I am extremely thankful for their willingness to help me with my inquiries and my questions.
There are many individuals to whom I am deeply grateful for the encouragement, guidance, and assistance they have provided me over the years. To my mentors, the late Dr. Albert Holzman of the School of Engineering at the University of Pittsburgh, the late Dr. Kenneth Anderson, Dean of the School of Education at the University of Kansas, and Dr. Paul Edwards of Baker University, I am thankful for the examples of scholarship and research excellence they all taught as well as exhibited in their own work. To my friend and former professional colleague, Dr. David L. Paden, formerly principal economist at Midwest Research Institute (MRI) in Kansas City, my thanks for serving as a role model as I honed my research skills