Public domain. Cover image from Project Gutenberg ebook #73987. Rivals of the clouds by Raoul Whitfield Download .m4b · 31 MB How to listen → · Problem with this narration? Let us know → Narrator Hildy — Wry Young Cub Reporter (en-US) Length 30 min Language English Added November 3, 2026 Source ebook Project Gutenberg License Public domain AdventureFictionNonfiction