For USAAF and USAF aircraft retired prior to May 1953:
Mail your history card request to:
Smithsonian Institution
P.O. Box 37012
National Air and Space Museum
Archives Division, Rm 3100, MRC 322
Washington, DC
20013-7012
Or send your history card request by email.
Cut and pasted from here:
http://www.nasm.si.edu/research/arch/co ... istory.cfmBe aware that there is a big records move planned for August and significant amounts of material will not be available for something on the order of two months while the move is completed. I don't know the turn-around time for the cards coming from NASM, but when we got them from Maxwell ARB, it was about 6 weeks.
Good luck and happy hunting.