Dr Diuguid’s obituary in the February 1, 2015, St Louis Post-Dispatch, related a poignant moment in his early professional life. After earning his PhD, as Diuguid mounted his job search,
[a]n executive at a chewing gum company in New York City offered him a coveted position as assistant research director. There was just one catch: It was the 1940s. He had to agree to “pass” as a white man and to never hire a black man. Diuguid … was a light-complexioned African-American. He refused—and didn’t get the job.
He moved to St. Louis and started his own business as an inventor and scientist.
Dr Diuguid’s “Salute to Excellence” citation told what we knew about him at the time, including a summary of his most significant inventions and research endeavors. In 2007, he received the first “Blacks in Science” award from the St. Louis Science Center. Until just a few years ago, he continued his work at the Du-Good Chemical Lab & Manufacturers near Jefferson and Chouteau in downtown Saint Louis.