The Highest Priced Serial Ever Published -- October 19, 2015

Washington Evening Star, 13-November-1914

Arthur Conan Doyle's last Sherlock Holmes novel, The Valley of Fear, was touted as "The highest priced serial ever published." 

The Valley of Fear Review -- August 27, 2014

From The New York Courier and International Topics, 27-February-1915.

The highest commendation for and the best description of The Valley of Fear (Doran) is that it is a genuine Sherlock Holmes novel, with all the suspense of The Sign of the Four and The Hound of the Baskervilles, and all the charm of personality which in Sherlock Holmes is added to his fascination as a detective. In an old English house is a murder mystery which seems insoluble. Guess as he may, the reader cannot find the surprising solution of the mystery which Sherlock Holmes and Dr. Watson unearth. Then the scene of the story suddenly changes to America and the murder syndicate of an anarchistic community. Here broods the shadow of horrible fear, but it is dissipated by the investigations and dramatic coup of a man who is as strange and interesting a character as any one whom Conan Doyle has depicted.

The Speckled Band -- October 21, 2013

This set of theater ads from the 05-December-1910 New York Tribune shows that two Sherlock Holmes plays were running at the same time.  William Gillette had revived his own play Sherlock Holmes and Lewis S Stone, who later played Judge Hardy, appeared as Sherlock Holmes in The Speckled Band, adapted by Arthur Conan Doyle himself.  I have not been able to find much more about this production, so it may not have been a success.  HA Saintsbury had appeared in the play in Britain with great success.  William Gillette was making one of many farewell appearances in his play.