Original New York System, Providence, Rhode Island
Established in 1927, the Smith Street Original New York System is indeed the first of its kind. The weiner is smaller than your standard frank and much redder in color. They are topped in a hamburger meat sauce along with chopped onion, mustard and celery salt. What actually constitutes a weiner is an industry secret, making it a true mystery meat.
Zippy the Pin Head visited the New York System.

Stateline Diner, Foster, Rhode Island
The State Line Diner, a handsome Worcester Lunch Car (#846), has done a bit of traveling. Manufactured in Worcester, Massachusetts, in 1955, it was first sold to a Mr. and Mrs. Bonthilier in Southbridge, Massachusetts. Whether they ran it as a diner in that location is currently unknown. The next we hear of it, it's in Gales Ferry, Connecticut, possibly under the name Big D's. It wasn't until sometime in the 1970s that the diner was moved forty miles northeast to Foster, Rhode Island, where it was called Ricky's Kitchen. It's not known when the diner's current moniker was adopted. - From Quahog.org
Zippy the Pin Head visited the State Line Diner.

Tex Barry's Coney Island, Attleboro, Massachusetts
Tex Barry’s Coney Island Hot Dogs was once part of a chain of 14 outlets in the southeast part of the Mass. of which only 2 survive. The other one is in Taunton, Mass. The Diner is housed in a 1926 vintage Worcester Lunch Car(#542). It was originally the Country Diner

Seaplane Diner, Providence, Rhode Island
The Seaplane Diner is a Jerry O’Mahoney model car, built in Elizabeth, N.J., in 1953. Under the name Gerard's, it was originally located in Woonsocket. It was moved to Providence in 1973 and renamed for its proximity to a seaplane port which is no longer extant. - From Quahog.org

Milk Jug, North Smithfield, Rhode Island
Ice cream stand built in 1929 in the shape of an old-fashioned cream can. It is 32' tall, a wood-frame structure with its cap and handle made of sheet metal. It was originally in Lincoln, RI with a twin in North Providence, RI that was later bulldozed. The ice cream parlor was sold in 1947 and added burgers and other foods. In 1960, it added a roofed patio for outdoor dining. The Can closed in 1968.

Chadwick Diner, Worcester, Massachusetts
Ralph's Chadwick Square Diner is a Worcester (#660) from 1930. The diner was moved here in 1979 from Chadwick Square. It is listed on the National Register of Historic Places.

Miss Worcester Diner, Worcester, Massachusetts
The Miss Worcester Diner, aka "Miss Woo", is a Worcester (#812), built in 1948. The building across the street from it was the manufacturing plant for Worcester diners for many years.
Zippy the Pin Head visited the Miss Worcester Diner.

Corner Lunch, Worcester, Massachusetts
The Corner Lunch is a DeRaffelle built in the mid-1950s. It was originally located in Babylon, NY. In 1967, it was updated by Musi who lopped off about one third of the diner and put it in back for a kitchen. It was installed in Worcester in 1968.
Zippy the Pin Head visited the Corner Lunch Diner.