Your Great Grand Father was in one hell of a fight. the 60th NY was part of General George (Pap) Green’s brigade. On the 2nd of July that brigade stopped Johnsons entire division in its tracks.
Thanks for the info!
His portrait is mounted in my living room, and here is a site celebrating the dedication of George Greene’s Monument at Culp’s Hill in 1907.
http://www.slcha.org/cwrt/60reunion/reunion.php
(My GGF is seated near the middle)