Adolphe Braun HouseSwiss Alps , c. 1866-1870. Lower Reichenbach Falls. Carbon print. Negative number 60 on verso. 40 x 51 cm with margins Sir Arthur Conan Doyle chose the date of May 4, 1891 and the Reichenbach Falls to set the final and deadly battle between his hero, the detective Sherlock Holmes, and his sworn enemy Professor Moriarty . Adolphe Braun HouseSwiss Alps, c. 1866-1870. Lower Reichenbach Falls. Carbon print. Negative number 60 on verso. 40 x 51 cm with margins