I can probably tell you far more than you ever wanted to know about Gettysburg, so instead of writing a whole book on this cache page I will give you a link (http://www.civilwar.org/battlefields/gettysburg.html) with more information that you can examine at your leisure. But if you do learn one thing from this description, let it be this: there was no shoe factory or shoe warehouse in Gettysburg. If someone tells you that they're telling you a common myth. Now with that out of the way, let us get on to the puzzle!
You will have to consider Gettysburg both as it was both in July 1863 and today in order to solve this puzzle.
N40 
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W75
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Cache is a small Gladware container taped to camouflage hidden somewhere in a Lower Macungie Township Park. Permission has been given for me to place this cache.
Difficulty is based on the puzzle as the hide itself isn't really that difficult. This is my first puzzle cache (and first cache overall, go figure) so drop me a line if you think it needs changing.
You can check your answers for this puzzle on GeoChecker.com.
Good luck and have fun!