Geological map of Texas : showing approximate locations and drilling wells, also names of companies drilling / compiled and for sale by Standard Blue Print Map and Engineering Co.Standard Blue Print Map and Engineering Company, creator[1920]Imperfect: chipped along folds and edges, with some loss of text. Backed with linen. Manuscript annotations on mIncludes index list of "Approximate locations of drilling wells and locations in Texas."Relief shown by hachures.Shows oil wells and fields.cartographic