Longhorns at LH7 Ranch (1961) E.H. Marks was one of the first Gulf Coast cattlemen to cross breed Brahman bulls with common longhorn stock. He also maintained a herd of 500 purebred longhorns in an attempt to save the breed from extinction. The Texas Longhorn Breeding Association of America later declared the Marks line one of the “seven families” of Texas longhorn cattle. Marks surveys his herd in this 1961 home movie.