Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Eternal Savage | 1914 | Edgar Rice Burroughs | N/A |
| 2 | The Eternal Savage / The Eternal Lover | 1914 | Edgar Rice Burroughs | Buy |
| 3 | The Mad King | 1926 | Edgar Rice Burroughs | Buy |
The Custer Siblings series connects three of Edgar Rice Burroughs’s adventure novels through a shared family. The Eternal Savage (1914) blends prehistoric adventure with modern romance, while The Mad King (1926) is a Ruritanian adventure set in a fictional European kingdom. The family connection gives these otherwise distinct stories a shared thread.