

George and Eathel Mendenhall February 12, 1945 in Iowa City, Iowa. Since his father was in the US Navy at that time, he did not meet his father until he was almost 1 year old.
David, as he was known to friends and family, was the eldest of five sons, and lived in Springfield, Ohio
until his parents moved permanently to Ann Arbor, Michigan in 1952. David excelled in his academic
pursuits in high school and college; earning a national Merit scholarship, winning the southeastern
Michigan High School science fair, and was the high school class salutatorian. During his high school
years, he performed basic chemical work at Parke Davis in Ann Arbor, and was proud of the fact that he
bicycled to work, a distance of over 12 miles one way.
After high school he attended the University of Michigan, obtaining a Bachelor of Science degree in
Chemistry in 1967. After matriculating from the University of Michigan, he pursued a PhD in chemistry
from Harvard where he received his degree in 1970. After receiving his PhD he obtained a post-doc
fellowship to work at the National Research Council in Ottawa, Ontario, where he met his future wife,
Yvonne Hendricks, whom he married in 1972. The couple then moved to California where he worked at
the Stanford Research Institute and moved to Columbus, Ohio to work at Batelle Labs in 1975. His two
children, Catherine Astrid and George Stuart were born in Columbus.
In 1980, David received a professorship at Michigan Technological University in Houghton, Michigan, where he taught and performed research until 2001. After retiring from teaching, he founded Northern
Sources, a chemical manufacturing and research company based in Hancock, Michigan. Shortly after this
venture was started, his wife Yvonne of 28 years died of cancer.
David’s next chapter was a move to New York, where he renamed his company “Eastern Sources” and
married Ying Dong in 2006. His life-long fascination with chemical preparations continued in his
manufacturing of compounds and materials that were too complicated and complex for most other
companies to make. David’s keen mind and analytical skills were second to none.
David developed multiple myeloma and various other afflictions in the last three years which impacted
his company’s production. The successive treatments for his cancer led to a stroke earlier this year, and
then he was overwhelmed with an infection which eventually led to his death.
David will be remembered for his keen mind, wonderful wit, generosity, and charming personality. As
the member of Emanuel Evangelical Lutheran and the tallest member of the Chinese church that he
regularly attended with his wife, David was fondly remembered by the congregants. He was an
internationalist, having lived in Jerusalem, Jordan, Freiburg, Germany, and having travelled frequently to
China and east Asia. As a professor, David mentored hundreds of students in chemistry whose careers
were impacted by his generosity and insight.
David is survived by his wife, Ying Dong, children, George Stuart of San Diego and Catherine Astrid
(Brownstein) of Boston, step-daughter Jennifer Schumacher and her husband Scott Schumacher, son-in-
law John Brownstein, grandchildren Jackson and Caroline Brownstein, and brothers Lauri, Stanley,
Gordon, and Stephen.
Viewing will take place between 4pm to 8pm on Friday, June 17th, at Michael J Higgins Funeral Home in
New City, NY. Funeral service will be held on Saturday 2:00pm, June 18th , at Rockland Chinese Alliance Church, 31 Main Street, in Tappan, New York.
Flowers can be sent to the Rockland Chinese Alliance Church between 12pm and 1pm on Friday. Internment will take place in Ann Arbor, Michigan at a future date.
Fond memories and expressions of sympathy may be shared at www.MJHigginsNewCity.com for the Mendenhall family.
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