I just got the following info from the the National Air and Space Museum. This will affect anyone thinking of ordering any plans, etc. from them during 2010.
During 2010, The Archives Division will move its offices and collections to the Steven F. Udvar-Hazy Center Phase Two in Chantilly, Virginia. The following services will be suspended as of these dates:
May 1 - Public and museum photo orders; film and video requests
August 1 - Reproductions of microfilm, drawings, and technical manuals; photocopies of collections material; donations to the collections; audio collection requests
September 1 - Research appointments at the Paul E. Garber Facility Reading Room in Suitland, Maryland
Permissions and reference services will continue, but expect delays in response. Access to the Archives/Library Reading Room in the National Air and Space Museum on the National Mall will continue during the move period.
Please visit the Archives Division website http://www.nasm.si.edu/research/arch/ (http://www.nasm.si.edu/research/arch/) for up-to-date information regarding the move schedule.