Palos of the Dog Star Pack is a science fiction novel by American writer John Ulrich Giesy. It was first published in book form in 1965 by Avalon Books. The novel was originally serialized in five parts in the magazine All-Story Weekly beginning in July 1918. John Ulrich Giesy (August 6, 1877-September 8, 1947) was an American physician, novelist and author. He was one of the early writers in the Sword and Planet genre, with his Jason Croft series. He collaborated with Junius B. Smith on many of his stories.