Francis Frith 1865 Drachenfels and the Siebengebirg, From Rolandseck [Hyperion: A Romance. Illustrated with Twenty-Four Photographs of the Rhine, Switzerland, and the Tyrol]
Published in Francis Frith, 1865, Hyperion: A Romance. Illustrated with Twenty-Four Photographs of the Rhine, Switzerland, and the Tyrol, (London: Alfred William Bennett, London), p. 3
