• Graduated from Appleton High School in 1937.
• Attended Appleton Business College for one year and received certificate in 1938.
• Employed at Kimberly-Clark Corporation from 1939 to 1950.
• Served in the military from 1942 to 1946. Entered as a Private and discharged as a Master Sergeant Major.
• Attended College of Advanced Traffic Extension Training Program at Appleton and Menasha from 1940 to 1949.
• Married Ethel D. Courtois on February 19, 1944.
• Assigned as instructor for Traffic Management and Interstate Commerce Commission Regulation from 1950 to 1964.
• Passed the Interstate Commerce Commission (ICC) bar exam in 1950.
• Lifetime member of the ICC and the Association for Transportation Law, Logistics, and Policy from 1950 forward.
• Employed at Kampo Transit, Inc. from 1950 to 1953.
• Established J. J. Keller & Associates on November 1, 1953 along with J. J. Keller Commerce Practice.
• Established Keller Development Corporation in 1955.
• Incorporated J. J. Keller & Associates, Inc. in 1958.
• Served as a member of the Board of Directors of Associated Bank in Neenah, WI until age 66.
• Established the Keller Foundation, Ltd. in 1991 for general charitable purposes.
• Established the John J. & Ethel D. Keller Donor-Advised Fund at the Community Foundation for the Fox Valley Region, Inc. in 1994.
• Lifetime member of the American Legion from 1946 to date.
• Lifetime member of the Benevolent and Protective Order of Elks from 1946 to date.
• Inducted into the Paper Industry International Hall of Fame in October 2001.
• Jack and Ethel Keller receive the 2005 Walter L. Rugland Community Service Award, sponsored by Thrivent Financial, the Community Foundation, and the Appleton Post-Crescent.
• Appointed as Founder and Chairman Emeritus of J. J. Keller & Associates, Inc. on July 1, 2006.

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