In the rarefied realm of classic cartoon pin-up art, nobody did it better than Jack Cole. With his quirky line drawings and sensual watercolors, Cole, under Hugh Hefner's guiding hand, catapulted to stardom in the 1950s as Playboy's marquee cartoonist, a position he held until his untimely death at the age of 43. Jack Cole has been justly celebrated as the creator of Plastic Man and an innovative comic book artist of the 1940s (especially...