Charles Wilderman Trigg (February 7, 1898 in Baltimore, MD—June 28, 1989 in San Diego, CA)[1] was a mathematics writer and lecturer for many years at the University of Southern California.
[4] Until 1950 his main field of research was the production of coffee, first at the Mellon Institute in Pittsburgh (1916-1920), and then at King Coffee Products in Detroit.
[4] In 1950 he became a lecturer at the University of Southern California where he stayed until 1966.
In 1967 he wrote his very popular book, Mathematical Quickies: 270 Stimulating Problems with Solutions.
[5][6] A reviewer said, "For the mathematics enthusiast of any age or level of sophisitcation, this stimulating treasury of unusual math problems offers unlimited opportunity for mind-biggling recreation.