Harold Newton was an unrecognized vagabond artist who not only captured the beauty of the Florida landscape but transformed it with an artistry that invoked its drama of light, color, and form while hinting at its dark, primordial forces. One of his fellow Highwaymen once observed of his work, "It don't have to be signed to know it's a Newton." Combining samples of his paintings with biographical details and reminiscences of family members, customers,...