“Howard Russell Butler fell between the interested fine artist and the astronomical specialist. He brought his training and experience in the fine arts—in particular and importantly, landscape painting—to extraterrestrial subjects. The sense of matter-of-fact realism these sensibilities brought to Butler's space art were also immensely influential on both the space specialists who followed and the science fiction illustrators who were just beginning to supply art for the pulp magazines in the last years of Butler's life.” – Ron Miller, author and illustrator; former art director of the National Air and Space Museum’s Albert Einstein Planetarium