Dagger." Boston American, 25 December to 31 December 1905. "The Fatal Cipher." Boston American, 1 January to 7 January 1906. "The Mystery of the Grip of Death." Boston American, 8 January to 14 January 1906. Second Series "Problem of Dressing Room 'A.' " Associated Sunday Magazines [e.g. (Minneapolis) Sunday Journal], 2 September 1906. (The original magazine publication also featured an introductory vignette, "The Thinking Machine.") "Problem of the Motor Boat." Associated Sunday Magazines, 9 September 1906. "A Piece of String." Associated Sunday Magazines, 16 September 1906 "Problem of the Crystal Gazer." Associated Sunday Magazines, 23 September 1906. "Problem of the Roswell Tiara." Associated Sunday Magazines, 30 September 1906. "Problem of the Lost Radium." Associated Sunday Magazines, 7 October 1906. The story takes place in a laboratory at the fictional "Yarvard University", named for Yale and Harvard). "The Problem of the Opera Box." Associated Sunday Magazines, 14 October 1906 "Problem of the Missing Necklace." Associated Sunday Magazines, 21 October 1906. "Problem of the Green Eyed Monster." Associated Sunday Magazines, 28 October 1906. "Problem of the Perfect Alibi." Associated Sunday Magazines, 4 November 1906. Also published as "His Perfect Alibi." "Problem of the Phantom Auto." Associated Sunday Magazines, 11 November 1906. Also published as "The Phantom Motor." "The Haunted Bell." The Saturday Evening Post, 17 November 1906 "Problem of the Stolen Bank Notes." Associated Sunday Magazines, 18 November 1906. Also published as The Brown Coat. "Problem of the Superfluous Finger." Associated Sunday Magazines, 25 November 1906. A doctor comes to Van Dusen with an ethical quandary: a woman wants a perfectly good little finger amputated, but won't say why. Third Series "Problem of the Knotted Cord." Associated Sunday Magazines, 20 January 1907. (The original magazine publication also featured an introductory vignette, "My First Experience with the Great Logician.") "Problem of the Souvenir Cards." Associated Sunday Magazines, 3 February 1907 "Problem of the Stolen Rubens." Associated Sunday Magazines, 17 February 1907 "Problem of the Three Overcoats." Associated Sunday Magazines, 3 March 1907 "Problem of the Organ Grinder." Associated Sunday Magazines, 17 March 1907 "Problem of the Hidden Million." Associated Sunday Magazines, 31 March 1907 "Problem of the Auto Cab." Associated Sunday Newspapers, 14 April 1907 "Problem of the Private Compartment." Associated Sunday Newspapers, 28 April 1907 "Problem of the Cross Mark." Associated Sunday Magazines, 12 May 1907 "Problem of the Ghost Woman." Associated Sunday Newspapers, 26 May 1907 "The Silver Box." Associated Sunday