A real treasure Bill!
I visited Gettysburg in September. I only had a few hours, so I took the two hour bus tour. I highly recommend it. The bus tour gives a great overview of the battle and stops at a few of the most important sites (Little Round Top among them). They drove by many of the State, unit, and individual monuments. Pennsylvania's is the biggest, I think NY's is second.
Here's a link to the NY monument:
http://www.gettysburg.stonesentinels.com/NY/NYstate.php
I plan to go back in the Spring and spend all day on a self guided tour.
Jack