(Cowboys) S. of Chelsea, Rogers County, OK. OK28/66 (Walnut Av.) SW 0.6 miles from jct with OK28 (6th St.) in Chelsea, S. on OK28 0.3 miles to the mural on the W. side of the road. (N36 31.320 W95 26.150) Photos by Jack & June Schmidt 5-18-09.