Hackenberg's in Milton (2 hours north of Gettysburg) and Drapers near the NY border (not on the way either) but I thought I'd throw it out there. I am not sure if Hackenberg will be open yet. Probably pollenating crops down south right now. There's also Aucker's in Millville (about 2 hours from Gettysberg). They are probably around. Drapers does tours if you give them a call. I'm sure if you ask you can get a tour of Auckers or Drapers too.