Despite generally crappy weather, my dad and his friend Steve Rogers, of http://lookingtowardportugal.blogspot.com/, went on a roadtrip from Washington DC to Harrisburg PA.
The West Shore Diner- Lemoyne, PA.
The West Shore is the earliest surviving Silk City diner, and so far as I can tell, the only surviving example of this model, with the demolition of the Miss Jersey City in the 1980s.
More photos of the West Shore can be found here and here.
Please note the narrow width of the diner, combined with the more extreme angles to the ceiling. It’s difficult to tell how much is original to the diner- interiorwise I would say not terribly much, but what is there is old enough to have a character of its own. I would have loved to have seen this diner when she was new.
Steve with an enormous, incredibly inexpensive plate of cream chipped beef
Bison Auction
Wonderful WPA-era frieze of livestock on the side of the building in which the bison auction was held.
Bison
Subway Cafe
This was just a picture stop, but it has a nice neon.
State Street Bridge
The eagles were carved by one of my ancestors, Ira A. Correll, who also carved the “He Ain’t Heavy, He’s my Brother” at Boystown, NE in addition to many many more sculptures. Unfortunately, the bulk of his work was never signed, so it is difficult to track down.
American Dream Diner
Wolfe’s Diner
Just down from Wolfe’s
Diner Hunter 
Too bad the weather wasn’t / isn’t better, but looks like you got some good shots! Looks like some or all of the diners could be Retro Roadmap worthy, always a treat! Let me know which ones were your faves and I’ll add ’em to the map!
The West Shore’s excellent, as is Wolfe’s.
The American Dream wasn’t open this time around, but in the past it’s been a pretty good diner.
I was interested in the Ira Correll comment. My wife’s family is also related to him. Even now my wife and I have three of his original concept drawings in our living room, and a small sculpture of Lincoln that he had done. Good stuff!