1. Why Fieldwork?
2. Geology of the Llano region and Austin area: Field excursion. Bureau of Economic Geology, University of Texas, Austin;Barnes V. E.;Guidebook,1972
3. Phycological studies: IV. Some soil algae from Enchanted Rock and related algal species;Bischoff H. W.;University of Texas Publications,1963
4. Exfoliation and weathering on granite domes in central Texas;Blank H. R.;Texas Journal of Science,1951
5. Bomar, G. W. 2017. Weather in Texas. Austin: University of Texas Press.