Here are the proper details for the three I initially reported:

The Virginia Aviation Museum, Richmond VA
URL is: http://www.vam.smv.org/

College Park Aviation Museum, College Park, MD
http://www.pgparks.com/places/historic/cpam/

The Kalamazoo Air Zoom, Kalamazoo, MI
http://www.airzoo.org/

All three are walkable (a block or less) from the GA parking area.