For you diner history buffs, I found this information on the National Register of Historic Places (NHRP) web site: Ann's Diner was added to the NHRP in 2003 (#03001264) and it’s also known as the Worcester Lunch Car Company Diner #824. Its historic significance is “event, architecture/engineering” and the architect, builder, or engineer was the Worcester Lunch Car Company. The area and period of significance is “commerce, architecture” from 1950-1974 and its historic and current function is “commerce/trade, restaurant”.
This bit of history is from the Pat’s Diner take-out menu: