An illustrator and editor as well as writer, one of Harrison’s first published novels was a ghost-written adventure for Leslie Charteris’ Saint, Vendetta for the Saint, which was filmed starring Roger Moore as Simon Templar. His various series extended throughout his writing career, and although he was primarily known for lighter fare, he also wrote serious novels including Make Room! Make Room! the basis for the 1972 movie Soylent Green.
In 2009, the Science Fiction and Fantasy Writers of America gave him the Damon Knight Memorial Grand Master Award.
His official website simply now shows his dates of birth and death, and the inscription “Ad Astra”.