In 1979 the collection , by then about 8,000 objects , was taken over by the Smithsonian Institution .
In 1979 the collection , by then about 8,000 objects , was is now housed in a central if underground location on the National Mall .
In 1979 the collection , by then about 8,000 objects , was taken over by the Smithsonian Institution and is now housed in a central if underground location on the National Mall .