George W. Barton and Associates
November 10 1959
George W. Barton and Associates
November 10 1959
George W. Barton and Associates
August 26 1958
George W. Barton and Associates
August 26 1958
George W. Barton and Associates
October 18 1956
George W. Barton and Associates
March 12 1959
Illinois Division of Highways
March 12 1959
Illinois Division of Highways
August 28 1956
George W. Barton and Associates
August 8 1957
George W. Barton and Associates
October 18 1956
George W. Barton and Associates