John Carter of Mars is the eleventh and final book in the Barsoom series by American writer Edgar Rice Burroughs. It is not a novel, but rather a collection of two John Carter of Mars stories. The first story was originally published in 1940 by Whitman as a Better Little Book entitled John Carter of Mars. Although credited to Edgar Rice Burroughs, it was written (and illustrated) by his son, John Coleman Burroughs and was later expanded and re-published in the January issue of Amazing Stories in 1941 as "John Carter and the Giant of Mars", the name it goes under in the collection.