circa 1940
1935
circa 1929 – 1930
1930 – 1935
1930s
1940s
1924
Godshalk, Clarence E.
circa 1950
Mackay, Edward J.
1950s
1993
July 1921
O. C. Simonds & Co.
August 1921
July 1921 – October 1922
Webster, Arthur L.
November 21 1934
Lozier, J. S.
June 25 1957
Steinbrecher, Harold F.
April 23 1985
Forest Preserve District of DuPage County
circa 1961
November 7 1974
March 25 1986
Sidwell Company