Artist Birthday Quiz for 11/21~

What American landscape artist, member of a prominent Philadelphia family of engravers, apprenticed to his brother but by 1867 had decided to become a painter?

What Belgian Surrealist painter became a designer for a wallpaper factory and then did sketches for advertisements, before becoming a full-time painter in 1926?

Answers here~ https://schristywolfe.com/2015/11/21/november-21/