Gotschalk would be an awesome pseudonym for a chalk talker. Here’s a bit about the author: “Born 1929 in Richmond, Virginia. BS ’54, MS ’56 psychology, Virginia Commonwealth University. Doctoral work at Tulane ’57-’58. Taught psychology at Nicholls College in Louisiana ’58-’62, a psychologist in North Carolina since ’62. Married, two children. Weight-lifter, pianist, composer, poet, model-builder, painter and inventor. Author of 35 short stories, a novelette and one novel.”