2011-02-152011-02-15http://hdl.handle.net/10605/1517Undated image of pumping unit or pump jack. PBPM 79-039.037.021 film negative : b&w ; 4 x 5 in.en-USThe images in this collection are for study purposes, teaching, classroom projection and research only. To use these digital files in any form, an attribution of "Photo courtesy of The Petroleum Museum, Lee Jones, Jr. Collection" must accompany the image.Oil well pumps.Oil wells--Texas.Petroleum industry and trade--Texas--Equipment and supplies--Photograph.Petroleum--Texas--Mitchell County.Image