- (1926) Novel: "The Outer Gate" (filmed as The Outer Gate (1937)).
- (1930) Novel: "The Back Stage Mystery" (aka "Curtain at Eight"; filmed as Curtain at Eight (1933)).
- Story: "The House in the Misty" (filmed as The Eyes of Mystery (1918).
- Story: "The Triple Cross" (filmed as The Kaiser's Shadow (1918)).
- Story: "Two Cents Worth of Humaneness" (filmed as Dollars and Sense (1920)).
- Story "False Fires" (filmed as The Law and the Man (1928)).
- Story: "Marco Himself" (filmed as The Social Lion (1930)).
- (1925) Novel: "The Iron Chalice" (filmed as The Big Gamble (1931), Red Dice (1926)).
- (1934) Story: "Transient Lady" (filmed as Transient Lady (1935)).
- (1927) Novel: "I Love You Again" (filmed as I Love You Again (1940)).
- Playwright: "Kid Tinsel" (filmed as The Pittsburgh Kid (1941)).
- Story: "The Lady Fare" (filmed as The Lady Fare (1929))
- Story: "Music Hath Harms" (filmed as Music Hath Harms (1929))
- Story: "The Final Tribute" (filmed as The Final Tribute (1955))
- (1951) Novel: "The Corpse That Walked".
- (1946) Novel: "Dangerous Lady".
- (1920) Novel: "Gray Dusk".
- (1941) Novel: "Lady in Armor".
- (1955) Novel: "Love Can Be Dangerous".
- (1919) Novel: "The Crimson Alibi".
- (1950) Novel: "Bullet for My Love".
- (1923) Novel: "Jim Hanvey, Detective".
- (1946) Novel: "Love Has No Alibi".
- (1928) Novel: "Florian Slappey Goes Abroad".
- Story: "The Suitors" (filmed as The Suitors (1953)).
- (1947) Novel: "Don't Ever Love Me".
- (1945) Novel: "Danger in Paradise".
- (1938) Novel: "East of Broadway".
- (1936) Novel: "Child of Evil".
- (1922) Novel: "Midnight".
- (1933) Novel: "The Townsend Murder Mystery".
- (1944) Novel: "Romance in the First Degree".
- (1940) Novel: "Romance in Crimson" (aka "Murder in Season").
- (1925) Novel: "Six Seconds of Darkness".
- (1960) Novel: "Star Trap".
- (1948) Novel: "My Love Wears Black".
- (1934) Novel: "Scrambled Yeggs".
- (1943) Novel: "The Sound of Revelry".
- (1932) Novel: "Star of Earth".
- (1959) Novel: "Murder Mistress".
- (1939) Novel: "Strange Honeymoon".
- (1931) Novel: "The May Day Mystery".
- (1948) Novel: "More Beautiful Than Murder".
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