'''Willis Day Twichell''' (March 24, 1864 – September 23, 1959) was a [[civil engineer]], based primarily in [[Amarillo]] and later [[Austin]], [Texas]], who surveyed 165 of the state's 254 counties.
+
'''Willis Day Twichell''' (March 24, 1864 – September 23, 1959) was a [[civil engineer]], based primarily in [[Amarillo]] and later [[Austin]], [[Texas]], who surveyed 165 of the state's 254 counties.