Sorry for the late notice, but NASM just sent this out late yesterday.
They are having a 1 day sale of autographed Warbird & Astronaut books today, Friday July 21, starting at 10am in their store in the Mall museum.
Among them, Paul Tibbets'
"Return of the Enola Gay".
more information at:
http://www.nasm.si.edu/events/eventDeta ... ventID=514