Keywords: GraberOliveHouseSignage.JPG signage in front of the 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 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 GraberOliveHouseVatRoom JPG Built in California in 1894 Buildings in Ontario California Brick fences Roadside attractions in the United States Shops in California |