Penetration testing in the design of foundations for large silos on Lias Clay : Butler, F G Proc Conference on Penetration Testing in the UK, Birmingham, 6–8 July 1988P65–69. Publ London: Thomas Telford, 1989International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts1990PDF230 KB
Clay v. Butler et al. June 15, 1922. [112 S. E. 697.]School of Law, University of Virginia1922PDF119 KB
Example of Stratigraphic Confusion: Type Locality of Butler Clay Member of Rockdale Formation (Wilcox Group), Bastrop County, TexasSharp et al. · AAPG Bulletin1966PDF1.4 MB
Depositional Settings of Texas Lignites: Dallas to San Antonio, Texas, July 4–8, 1989Ayers · 19891989PDF811 KB
