2012-08-222012-08-22http://hdl.handle.net/10605/12716Undated photograph of an oil derrick located in Mexia, Texas. The oil derrick was left standing from the oil boom era of the 1920's in Mexia.1 postcard : b&wen-USOil fields--Texas.Petroleum industry and trade--Texas.Petroleum--Texas--Mexia.Image