PHOTO BY KRISTY GRAVER The dumbwaiter at the Original Oyster House in Market Square has been through nearly two centuries of ups and downs. Co-owner Renee Grippo (known as Mrs. G) believes the contraption is a relic from the Bear Tavern that opened on the site in 1827. For nearly 155 years, it’s delivered breaded oysters, jumbo fish sandwiches, clam...| Pittsburgh Magazine