Anne: Thanks for the response and the pointer to your Father's site.I did not see a family tree so I thought I would pass a bit of my Kirchgraber information to you so that you might pass it on to him.
Starting with my maternal Grandfather, here is how I trace the name back to Ehingen, Germany:
Frank Busch Kirchgraber Edwin Henry Kirchgraber Johann Kapistran Kirchgraber Wolfgang Kirchgraber b1797 - d1877 Josef Franz Kirchgraber b1770 - d1843
I have thedata from Stephen Kirchgraber and Hermann Kirchgraber, names that might be in your Father's papers.
If he is interested, have him contact me, please. Alex