David Myhra worked in the aviation power plant industry, for Westinghouse and General Electric. He earned his doctorate on Urban Planning. Myhra served in the U.S. Marine Corps in Vietnam briefly before discharge in 1964 with the rank of Lieutenant. For much of his life, he was an U.S.-based author and researcher, actively publishing from 1980 to 2019. He published more than 130 books and dozens of eBooks & articles on varied historical topics, from Soviet-era aircraft carriers and Japanese battleships to X-planes and World War II German flying machines. His primary focus was the latter. Most of his books cover individual aircraft types, both paper-projects and full production warplanes, and their designers - many he personally interviewed. Myhra was first to publish books on VTOL (Vertical Takeoff and Landing) test aircraft. He interviewed dozens of aviation designers, gas turbine & rocket scientists all over the world. He traveled extensively to research and interview German scientists captured and taken to the Soviet Union, forced to work on their derivative projects after the war. He was involved in production of numerous "History Channel" documentaries and other historical programming, foremost being the National Geographic 2009 documentary "Hitler's Stealth Fighter" which featured the building of a full-scale replica of the Horten "Flying Wing" by the Northrop Grumman Corporation. This replica was built to investigate the stealth characteristics and radar cross section of the original 1944 design. In 2010, the Museum was selected by Northrop as the permanent home of the full scale replica of the Horten Ho 229. This impressively large, accurately detailed twin-jet flying wing dominates the skies near the Museum's P-51 "Mustang" exhibit and gives a glimpse into "what might have been." Visitors are drawn to the unfamiliar, out-of-place bat-winged shape among our aluminum piston-engine fighters and it is quite the conversation piece. Myhra was instrumental in the construction of the replica aircraft and many of his documentary materials used in that production are included in this collection. The contribution of the Horten brothers to aviation is interesting - as designers and inventors, their work almost mirrored that of American genius Jack Northrop. Quickly realizing the advantages of an all-wing design, both Northrop and the Hortens spent the late 1930s-1940s fully invested in flying wing development. The Horten's work validated Northrop's but played no role in his futuristic YB-35 and XB-49 bombers; however, their research led to this odd, modern-day juxtaposition of the current builders of the B-2 and X-47 creating a full sized replica of the last gasp of the Luftwaffe, the Ho 229. The donation of the Myhra collection (hundreds of interviews with the Horten brothers, thousands of photos, blueprints, etc.), which was used to create the replica, provides researchers with not only a full sized replica, but also the background documentation on this unique aircraft type. The collection contains Myhra's manuscripts, interviews with aircraft builders & airmen, and dozens of binders filled with aircraft photographs, original & copied wartime reports, and a wide variety of ephemera related to WWII aviation. The binders and folders cover a broad range of aviation topics and many of the photos are unique. Fans of Myhra know he published many articles and books concerning what can best be described as "flights of fancy" - specifically, the dreaded "Nazi Flying Saucers." Commercially, publication of short-run books on specific aircraft have little meat on the bone and Myhra made the choice to leave traditional subjects behind for more financially viable subjects, just as popular interest in UFOs and WWII "secret weapons" really took off. His background knowledge of German procurement systems, production methods and facilities, and his unrivaled personal familiarity with many German aviation engineers gave further weight to these otherwise 'airy' projects, and his books on these often led to multiple reprints. On the controversy itself, he included the following detail in the foreword to one of his later books that speaks volumes: "Much has been written about the alleged existence of Nazi flying saucers or disk-shaped flying machines from World War II, however, despite claims of a few would-be, obscure, former Nazi aviation designers from about mid-1947 and on, there are no original first-hand historical accounts or documents to support these claims." ("Sack AS 6", 2013)