Keywords: GraberOliveHouseVatRoom.JPG Graber Olive House 315 E 4th St Ontario CA 91764 In 1894 two years after planting olive trees in Ontario California C C Graber began selling vat cured olives from the pictured vat room in vats similar to the ones pictured Graber Olive House is the oldest operating olive packer in the United States Own Uzma Gamal 2011-01-16 Public domain No restrictions on use File GraberOliveHouseSignage JPG Olives Olea europaea in California ¢ Food curing Food-related equipment Buildings in Ontario California Built in California in 1894 Roadside attractions in the United States Shops in California |