A Ride Across Palestine
The Riddle of the Universe at the close of the nineteenth century
The Riddle of the Spinning Wheel
The Riddle of the Sands
The Riddle Of The Rocks
The Riddle of the Rhine: Chemical Strategy in Peace and War
The Riddle of the Purple Emperor
The Riddle of the Night
The Riddle of the Mysterious Light
The Riddle of the Frozen Flame
De ridders van den halven toren
De Ridders
De Ridderromantiek der Franse en Duitse Middeleeuwen
Rídan the Devil, and Other Stories
Ricordi di un garibaldino dal 1847-48 al 1900. vol. I
Ricordi di Parigi