Any suggestions for eats close to any of the aforementioned interstates? (We'll be on 78 until Harrisburg-ish, then 81 west to 76 to 70, until Columbus, OH.)
I've researched previous recs and found Haag's Hotel (and/or Shartlesville Hotel) in Shartlesville; Summit Diner in Somerset; and Breezy Heights Tavern outside of Washington (although directions for that one were vague). And, of course, the injunction not to miss the lard-fried potato chips.
Any other ideas? We'll be on the road for both lunch and dinner (and breakfast, going in the opposite direction).