Just went to a concert with Rory Block and heard that her father's first wife had an affair with Bill Steig. Can't trust those cartoonists, I guess.
Also found a note on line that a local museum has a collection of cartoons by him. These go along with the paintings and cartoons by Sendak, Wyeth, Pyle and others. See note below.
So astonishing is the broad range and deep humanity of William Steig's cartoons, 107 of which are now on display at the Brandywine River Museum, that they could have been mistaken momentarily for a batch of very sensitive material suddenly declassified. Instead, they're being celebrated in "Comic Catharsis: A Gift of Cartoons by William Steig."