References
ROESSLER, A.R., 1874, LATEST MAP OF THE STATE OF TEXAS: NEW YORK, E. WELLKE AND BROTHER (1 IN. = 40 MI).ROESSLER, A.R., 1869, COPPER ORES IN TEXAS: VERHANDLUNGEN DER KAISERL.-KONIGL. GEOLOG. REICHSANSTALT, WIEN, JAHRGANG 1869, NO. 1, P. 2. QUOTED, SAN ANTONIO EXPRESS, OCTOBER 16, 1868.CUMMINS, W.F., 1891, TEXAS GEOLOGICAL SURVEY, 2ND ANNUAL REPORT, P. 359-552 (P. 403, 449, 451, PL. 18).PLUMMER, F.B., AND FUQUA, H.B., AND OTHERS, COMPILERS, 1929, GEOLOGIC MAP OF WICHITA COUNTY, TEXAS: TEXAS BUREAU OF ECONOMIC GEOLOGY, SCALE 1:48,000.ROMER, A.S., 1974, BREVIORA, HARVARD MUSEUM OF COMPARATIVE ZOOLOGY, NO. 427, 31 P., MAP.HENTZ, T.F., AND BROWN, L.F., JR., COMPILERS, 1987, IN BARNES, V.E., GEOLOGIC ATLAS OF TEXAS - WICHITA FALLS-LAWTON SHEET: TEXAS BUREAU OF ECONOMIC GEOLOGY, SCALE 1:250,000.HENTZ, T.F., 1988, TEXAS BUREAU OF ECONOMIC GEOLOGY, REPORT OF INVESTIGATIONS 170, 55 P. (PETROLIA FORMATION).FURMAN, J.H., 1881, NEW YORK ACADEMY OF SCIENCE, TRANSACTIONS, V. 1, P. 15-20, MAP (P. 18-19).