A real photo postcard of an oil field in Brea, California.11 November 1923. The image shows foothills in Brea with oil derricks, and wooden structures. A building on the left has a sign which reads "General Petroleum Corp." There are oil tanks at the bottom of the hills, and a foot bridge toward the bottom left. There is creasing, abrasion on edges, stains, fading, and discoloration. The object is in good condition overall.