Its ownership gave him what he regarded as the best Year-Round grazing ranch in the state of Oklahoma.
Earl Q. Gray recognized the grazing potential of this limestone area of Johnston County which was further enhanced by its proximity to the headwaters of Pennington Creek, a spring-fed stream of 20 to 40 feet running several miles through the 9,400 acre property.
Under the Walking G and Q Bar brands, Earl Q. Gray ran Hereford cattle here until his death in 1979.
At the present time, the operation is devoted to yearlings on grass combined with a herd of Black/Black Baldy cows. The ranch office is maintained in Ardmore, Oklahoma, but the original site near Mill Creek continues as Gray Ranch Headquarters.
The ranch continued to operate as a family enterprise until 1993, when it passed into the hands of grandson Keith R. Gray. Like his father and grandfather, the third-generation owner came to the Gray Ranch with a background, knowledge, and experience in the cattle industry. Since that time the Gray Ranch Company has expanded into Murray and Carter counties.