- Mr. Whitmer was born in Los Angeles, California.
- Graduated from Lawton High School in Lawton, Oklahoma.
- Graduated from Utah State University, Logan, Utah.
- Served in the United States Peace Corps in Brazil from 1964-67.
- Served in the United States Army from 68-70 in Panama.
- Worked for the United States Agency for International Development in Vietnam from 71-73.
- Worked for Oriam Exports Bangkok, Thailand from 74-75.
- Worked for ELS Language Services at Oklahoma City University, Oklahoma from 75-81.
- Worked for Bendix Field Engineering Corp at the Presidency of Civil Aviation (now named GACA), Jeddah, Saudi Arabia from 81-86.
- International Educational Adviser, Goiania, GO, Brazil. 1987 to Present.