↑Sherlock Holmes on the Screen: The Motion Picture Adventures of the World's Most Popular Detective by Robert W. Pohle, Jr. and Douglas C. Hart, page 94, c.1977
↑"It has been suggested that, although there may have been legal reasons, the mediocrity of so many of the earlier Holmes films was the deciding factor in releasing the film in Britain under the title of Moriarty." Davies, David Stuart. Holmes of the Movies: The Screen Career of Sherlock Holmes. Bramhall House; 1st edition (1978). ISBN0-517-23279-0. Page 28.