Charles Geer (1922 – 2008) was an American illustrator and author. Best known for his illustrations in numerous children's books, including The Mad Scientists' Club published between 1960-1968, Geer was also a prolific hard cover jacket illustrator for Dodd Mead, William Morrow, and other publishers of Mysteries and Gothics throughout the 1960s.
I have always been fond of Geer's use of watercolor techniques to convey mystery and emotion in his jacket paintings, from the cool shadows on a hot summer day as in Return to Aylforth, to the splendid sunset of Black Is the Colour of My True-Love's Heart and the light reflecting on the storm tossed waves in Lyonesse Abbey.
All scans are from my personal collection. No copyright claimed or intended.