Dallas-based Cross Timbers Royalty Trust functions as an express trust within the United States, holding a substantial majority interest in various producing and non-producing royalty and overriding royalty interest properties across Texas, New Mexico, and Oklahoma. Specifically, the trust operates 90% net profits interests in these diverse properties, as well as maintaining 75% net profits working interest in four Texas properties and three Oklahoma properties. Established in 1991, Cross Timbers Royalty Trust has become a significant player in the region's oil and gas industry.