Ralph’s Rock Diner, at 148 Grove Street in Worcester, Massachusetts, is a 1930 Worcester model, #660. The Worcester Lunch Car Company operated in this city from 1906 to 1957 and manufactured hundreds of lunch carts and classic diners. Robert and Mamie Gilhooly originally opened this diner on Grove Street in Worchester’s Chadwick Square (hence the name, Chadwick Square Diner).




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