Public domain. Cover image from Project Gutenberg ebook #64723. In the Sphere of Time by Ray Palmer Download .m4b · 76 MB How to listen → · Problem with this narration? Let us know → Narrator Arthur — English RP Narrator (en-GB) Length 1 hr 16 min Language English Added November 13, 2026 Source ebook Project Gutenberg License Public domain AdventureScience Fiction