The vast majority of historians and notable genealogists, as well as the Smithsonian Institute and the Thomas Jefferson Memorial Foundation accept that the scientific as well as other temporal evidence demonstrates very strongly that Thomas Jefferson fathered Sally Hemings' children.  You folks at the Monticello Association who cannot accept this, are showing a very ugly side of human disposition: snobbishness, stubbornness and willful stupidity.  It's not very becoming for having descended from Thomas Jefferson.