Dishes Invented in Massachusetts Restaurants?

I'm trying to find every restaurant/hotel/eatery that invented or first served a specific regional dish in Massachusetts. Not looking for drinks. So far I know of:

1.Kelly's Roast Beef- North Shore Three Way

2.Parker House Hotel- Boston Cream Pie & Parker House Roll

3.Woodman's of Essex- Fried Clams

4.Black Joe's Tavern- Joe Frogger

5.Toll House Inn- Chocolate Chip Cookie

6.Nite Owl Diner- Hot Cheese

7.Cape Cod Cafe- Bar Pie Pizza

8.Howard Johnson's/ J. J. Nissen's Bakery- Top Split Bun

9.Tally Ho- Chicken Barb

10.Oriental Chow Mein- Chow Mein Sandwich (possibly)

11.Hilltop Steakhouse- Steak Tips (possibly)

Know any others?