Good discussion with some additional pics here:
WWII veteran William Overstreet Jr. celebrated for flight in France (under Eiffel Tower in dogfight)
http://www.freerepublic.com/focus/f-news/3107587/posts
Also detailed article of WWII experiences here:
WWII Veteran Aviator Bill Overstreet and His P-51 Mustang, “Berlin Express”
http://www.warbirdsnews.com/warbird-articles/wwii-veteran-aviator-bill-overstreet-p-51-mustang-berlin-express.html