«Elementary My Dear Watson!»
[The Guinness World Records has consistently listed Sherlock Holmes as the [most portrayed movie character] with 75 actors playing the part in over 211 films. Holmes first screen appearance was in the Mutoscope film Sherlock Holmes Baffled in 1900, albeit in a barely-recognisable form.
William Gillette’s 1899 play Sherlock Holmes, or The Strange Case of Miss Faulkner was a synthesis of several stories by Doyle, mostly based on A Scandal in Bohemia adding love interest, with the Holmes-Moriarty exchange from The Final Problem, as well as elements from The Copper Beeches and A Study in Scarlet. By 1916, Harry Arthur Saintsbury had played Holmes on stage more than a thousand times. This play formed the basis for Gillettes 1916 motion picture, Sherlock Holmes.
The first sound film to feature Sherlock Holmes, was The Return of Sherlock Holmes, written by Basil Dean, and filmed in New York City in 1929. It starred Clive Brook as Sherlock Holmes. It supposedly marks the first use of the line, [Elementary, my dear Watson]. The film exists today, only as a silent picture, because the sound disks were lost.
Basil Rathbone starred as Sherlock Holmes, alongside Nigel Bruce as Dr Watson, in fourteen US films (two for 20th Century Fox and a dozen for Universal Pictures) from 1939 to 1946, as well as a number of radio plays]. – Wikipedia
British writer Sir Arthur Conan Doyle (1859–1930), creator of fictional detective Sherlock Holmes. Doyle studied medicine at Edinburgh University and practised as a physician during the 2nd Boer War. He started publishing short stories in 1879 while working as a doctor in Southsea. The Sherlock Holmes stories were serialised in [The Strand] magazine and proved so popular that Doyle felt pressurized to revive the character after the detective had plunged to his death over a waterfall. (Photo by London Stereoscopic Company/Getty Images). Circa 1895
British writer Sir Arthur Conan Doyle, circa 1900. (Photo by Hulton Archive/Getty Images)
British doctor and creator of literary detective Sherlock Holmes, Sir Arthur Conan Doyle, circa 1905 (Photo by London Stereoscopic Company/Getty Images)
English author Sir Arthur Conan Doyle and his family. (Photo by Topical Press Agency/Getty Images). April 1922
Arthur Conan Doyle in Paris for a spiritualist conference. (Photo by Topical Press Agency/Getty Images). 9th September 1925
Scottish novelist Sir Arthur Conan Doyle. (Photo by General Photographic Agency/Getty Images). Circa 1930
William Gillette as the lead in a stage production of [Sherlock Holmes], at the Lyceum Theatre. Playwright: William Gillette, Arthur Conan Doyle (Photo by Hulton Archive/Getty Images). 9th September 1901
Distinguished British film actor, Clive Brook (1887–1974). (Photo by Hulton Archive/Getty Images). Circa 1935
British comedy actor Nigel Bruce (1895–1953), who is probably best remembered for his portrayal of Sherlock Holmes colleague Dr Watson. (Photo by Sasha/Getty Images). 26th April 1928
Actors Basil Rathbone (1892–1967) and Nigel Bruce (1895–1953) have a conversation in a still from the film, [The Adventures of Sherlock Holmes] directed by Alfred L. Werker, 1939. (Photo by Hulton Archive/Getty Images)