From the masterful author of The Tarzan Series, Edgar Rice Burroughs, this thrilling adventure collection features the fantastical stories of valiant siblings, Victoria and Barney Custer.

Set over 100,000 years ago, a brave caveman warrior is deeply in love with the beautiful Nat-ul. Revered by the tribesmen, Nat-ul could have anyone she wanted, but her love for Nu is as great as his for her. When an earthquake strikes the prehistoric African land, Nu is trapped inside a cave. When he emerges, he finds he has been transported to the twentieth century. In this frightening modern world, Nu meets the reincarnation of his lost love, Victoria Custer. The Eternal Lover (1914) travels forward and back in time as Nu and Victoria fall in love and find themselves tangled in adventure. Sweetheart Primeval (1915) continues their story as the characters encounter prehistoric beasts, meet Tarzan, and navigate a centum millenium love triangle.

Victoria's brother, Barney Custer, features in his own adventure novel, The Mad King (1914). The young American has no idea that he is the son of a princess. When he goes to visit his mother's homeland, the fictional European kingdom of Lutha, it's revealed that he is almost an exact doppelganger for the country's King. Barney is mistaken for the monarch, which leads to a long string of comedically disastrous events.

This volume includes all four of the Custer Siblings novels, featured in their original publication order:

- The Eternal Lover

- The Mad King

- Sweetheart Primeval

- Barney Custer of Beatrice

First released between 1914 and 1915, these fantasy-adventure novels have been republished in a new, complete collection and would make the perfect read for fans of Edgar Rice Burroughs' Tarzan books.