1. Kirkland, F. & Newcomb, W. W. Jr Rock Art of Texas Indians (University of Texas Press, Austin, 1967).
2. Shafer, H. J. Ancient Texans (Texas Monthly Austin, 1986).
3. Pfeiffer, J. E. The Creative Explosion (Harper and Row, New York, 1982).
4. Breuil, A. H. Four Hundred Centuries of Cave Art (Hacker Art Books, New York, 1979).
5. Sieveking, A. The Cave Artists (Thames and Hudson, London, 1979).