This is Microsoft founder Paul Allan's Flying Heritage Collection.
Museums - Air
The planes within the Flying Heritage Collection were created at a time when aeronautical discovery had evolved to aviation mastery. Finely crafted by distinguished design bureaus with leading technologies of the 1930s and 1940s, the main emphasis of the collection includes combat aircraft from World War II. In 1998, Paul G. Allen began acquiring and preserving these iconic warriors and workhorses, many of which are the last of their kind. Allen's passion for aviation and history, and his awareness of the increasing rarity of original WWII aircraft, motivated him to restore these artifacts to the highest standard of authenticity and share them with the public.
Links: flyingheritage.org, www.xconomy.com