Which American painter and printmaker served in the US Air Force during WWII, and began to paint while hospitalized for several years after being injured during test flight maneuvers?

Which artist is considered one of the leading figures of the Arte Povera — “poor art” — movement, which took place between the end of the 1960s and the beginning of the 1970s in Italy?

Answers here~ https://schristywolfe.com/2015/06/25/june-25/