(US66 Sign) at the National Route 66 Museum in Elk City, Beckham County, OK. Bus.I40 (OK6/34/66) W. 0.1 miles from jct with Pioneer Rd. to the sign on the N. side of the road at 2717. (6-15-09, N35 24.713 W99 26.240) Photo by Jack & June Schmidt.