In 1999 the first seven of these were reprinted in three graphic novels by Dark Horse Comics as "Edgar Rice Burroughs' Tarzan of the Apes" ("Tarzan of the Apes", "Return", "Beasts", and "Son of Tarzan"), "Edgar Rice Burroughs' Tarzan — The Jewels of Opar", and "Edgar Rice Burroughs' Tarzan The Untamed" ("Tarzan the Untamed" and "Tarzan the Terrible").