Author:Natalie Sumner Lincoln

Inspector Mitchell

 * I Spy (1916)
 * The Nameless Man (1917)
 * The Moving Finger (1918)
 * The Three Strings (1918)
 * The Cat's Paw (1922)
 * The Meredith Mystery (1923)
 * The Missing Initial (1925)
 * The Blue Car Mystery (1926)
 * The Dancing Silhouette (1927)
 * P. P. C. (1927)

Detective Ferguson

 * The Red Seal (1920)
 * The Unseen Ear (1921)

Other novels

 * The Trevor Case (1912)
 * The Lost Despatch (1913)
 * The Man Inside (1914)
 * C. O. D. (1915)
 * The Official Chaperon (1915)
 * The Thirteenth Letter (1924)
 * The Secret of Mohawk Pond (1928)
 * The Fifth Latchkey (1929)

Works in periodicals

 * The Man Inside (Smith's Magazine serial) (1914)
 * The Nameless Man (McCall's serial) (1917)
 * The Moving Finger (All-Story Weekly serial) (1918)
 * The Unseen Ear (Detective Story Magazine serial) (1920)