The playful ease and subtle humor of Al Taylor's drawings made him an artist's artist par excellence. When he died of lung cancer at age 51 in 1999, he left a large body of work--of the constructions he thought of as three- dimensional drawings, made of broomsticks and wires and tin cans and linoleum and other clean-lined debris, with which he "drew" in the air; and then piles upon piles of drawings themselves, of which Charles Yoder has written that...