Oil and ranching remain important to Denver City. The first well was drilled by the wildcatter "Red" Davidson of Fort Worth on the ranch lands of L.P. and Ruth Bennett and her father, Dr. J. R. Smith. Oil gushed to the surface for the first time on October 10, 1935. A part of this Wasson Field, as it is known, is the site of the Yoakum County Park, donated in 1964 by Gene H. Bennett (1921–1998), the youngest son of the Bennetts.