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Williams, Emmett L. and Goette, Robert L. and Stark, William G. and Matzko, George T. (1998) Fossil Wood From Big Bend National Park, Texas (Dawson Creek Region)—Part V: Origin and Diagenesis of Clays. Creation Research Society Quarterly, 35 (1): 5.

Williams, E. L. and Howe, George F. and Matzko, George T. and White, Richard R. and Stark, William G. (1995) Fossil Wood of Big Bend National Park—Part IV: Wood Structure, Nodules, Paleosols, and Climate. Creation Research Society Quarterly, 31 (4): 3.

Williams, Emmett L. and Matzko, George T. and Howe, George F. and White, Richard R. and Stark, William G. (1993) Fossil Wood of Big Bend National Park, Brewster County, Texas—Part III: Chemical Tests Performed on Wood. Creation Research Society Quarterly, 30 (3): 4.