2011-04-232011-04-23http://hdl.handle.net/10605/1734Undated image of four men at oil derrick, all are oil executives identified on image. Small building in background next to derrick. Picture taken at Albert Humphreys' oil fields around Mexia, Texas.1 print : b&w ; 7 3/8 x 9 5/8 in.en-USThe images in this collection are for research and public education only. To use these digital files in any form, an attribution of "Courtesy of the Confederate Reunion Grounds State Historic Site" must accompany the image. Permission to publish these digital files in any form must be granted by the Confederate Reunion Grounds. Contact crg@thc.state.tx.us.Petroleum industry and trade--Texas.Humphreys, Albert E.O'Neill, James E.Sinclair, Harry F.Oil industries--Texas.Stewart, Robert W.Image