Willis, the final successor to Earl Mac Pherson in the Brown & Bigelow "Sketchbook" series, is perhaps the last major pin-up artist and the only one truly reflecting the sexual revolution.
Primarily known for depicting brazenly sensual '60s women in semi-nude disarray, Willis has only a superficial similarity to Elvgren, the innocent girls next door of the latter having little to do with the wanton women of the former.
Oklahoma-born Willis had a distinguished career in magazine illustration. His clients included Collier's, Redbook, and The Saturday Evening Post, and his association with Esquire made him one of that magazine's earliest entries in its ultimately vain attempt to create a new Petty or Vargas.
Collectors could be on the look-out for Willis' how-to art books for Walter Foster.