Little girls. Fat hairy ponies. Hook-nosed riding teachers, riders on backward, and horses gone madly off course. The artist Norman Thelwell published his first pony cartoon in 1953, and quite by accident, his name became synonymous with these kinds of images. “The response was instantaneous,” he wrote in his autobiography. “Suddenly I had fan mail…I dreamed up some more horsey ideas and people went into raptures.” The “Thelwell pony” soon became the most-often referenced source of horse-humor the world over. In 1957, Thelwell’s first collection of pony cartoons, Angels on Horseback, was published, followed by A Leg at Each Corner in ‘61, and Riding Academy in ’63