Arnold's Lieut. Gullivar Jones (also published as Gulliver of Mars) is considered important in the development of 20th century science fiction in that it is a precursor and likely inspiration to Edgar Rice Burroughs's classic A Princess of Mars (1917), which spawned the planetary romance and sword and planet genres. Ace Books reprinted Arnold's novel in paperback in 1964, re-titling it Gulliver [sic] of Mars. A more recent Bison Books edition (2003) was issued as Gullivar of Mars, adapting the Ace title to Arnold's spelling.
