1973 – 1974
Helmick, William K.
1970s
Knoedler, Bob
March 11 1970
Steinbrecher Jr., Harold F.
July 21 1970 – July 31 1971
Myhrum, Arthur
May 24 1971
Kroeschell Engineering Co., Myhrum, Arthur
April 21 1971
Kroeschell Engineering Co., Myhrum, Arthur
March 16 1972
California Manufacturing Company
August 20 1971
California Manufacturing Company
August 9 1972
Kroeschell Engineering Co., Myhrum, Arthur
March 22 1973
C. L. Doucette, Inc., C. L. Doucette, Inc.
December 11 1978
Keiser Associates
March 28 1982
C. Edward Ware Associates, Inc.
December 21 1970 – May 16 1972
Myhrum, Arthur
circa 1970
Tyznik, Anthony
1976
Coulter, Ronald M.
October 1989
Tyznik, Anthony, Tyznik, Anthony
circa 1972
Tyznik, Anthony
February 7 1972
Kroeschell Engineering Co., Myhrum, Arthur