Gettysburg College was mentioned in a June 28 Harrisburg Patriot-News article as a parking location during the battle anniversary.
From the Patriot:
He also recommending using the various shuttle services available during the anniversary celebration. Shuttles will be running from July 1-3 on 15-20 minute intervals. The buses on July 1 will operate from the Gettysburg College Stadium West parking lot, while on July 2 they will be at the parking lots on Taneytown Road near the Soldiers' National Cemetery. The busses will operate from Parking Lot 3 of the Gettysburg National Military Park Museum and Visitor Center.