Many persons outside the National Air and Space Museum contributed to this Guide, by filling out our survey forms, sending letters and lists, and by answering our hundreds of telephone inquiries. We wish to express our sincere thanks to all of them. We also wish to thank staff members and behind the scenes volunteers of the Smithsonian Institution, particularly Donald S. Lopez who developed the idea; Edmund T. Wooldridge, Jr., who first organized the collection and editorial efforts; the staff of the Office of Computer Services for their clever and effective assistance in solving computer problems; several staff members of the Smithsonian Institution Libraries who nurtured the project during 1982-1987; and Nancy Hinton and the Office of Staff, Volunteer, and Intern Services. By name we also thank:
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