Public domain. Cover image from Project Gutenberg ebook #68247. Vocation auctore George O. Smith Detrahe .m4b · 46 MB Quomodo audiendum → · Problema cum hac recitatione? Animadversionem mitte → Recitator Walter — American Narrator (en-US) Diuturnitas 45 min Lingua English Additum November 7, 2026 Liber electronicus originalis Project Gutenberg Licentia Public domain Science Fiction