Believe it or Not! (Aug, 1931)
Believe It or Not! by Ripley
Striking and little known facts that challenge belief.
Anyone doubting the truth of the statements may obtain proof by writing to Robert L. Ripley, in care of Modern Mechanics and Inventions, 529 So. 7th St., Minneapolis, enclosing a stamped envelope. Each month Bob Ripley presents to Modern Mechanics and Inventions readers two pages of drawings illustrating amazing, curious and little known facts gathered from all parts of the world. If you are of a scientific cast of mind, you will undoubtedly find Ripley’s discoveries especially interesting, as they are unearthed largely in the field of science. Though they seem incredible, Ripley can prove the statements to your satisfaction.