D. J. Sibley and his wife, Effie Potts, were long-time and prominent members of the Trans-Pecos and Big Bend portions of West Texas. After the death of D.J. Sibley, Mrs. Sibley felt the need to share what the land had provided them. Mrs. Effie Potts Sibley of Ft. Stockton, Texas established the Potts and Sibley Foundation on November 24, 1967. Mrs. Sibley passed away on April 24, 1978 and subsequently the Potts and Sibley Foundation was funded by her estate.