| The New York Hat | 1912 | Writer |
| A Sister's Burden | 1915 | Writer |
| Fanchon, the Cricket | 1915 | Writer |
| Rags | 1915 | Writer |
| Esmeralda | 1915 | Writer |
| Camille | 1915 | Screenplay |
| The Foundling | 1916 | Writer |
| The Crucial Test | 1916 | Writer |
| A Woman's Way | 1916 | Writer |
| The Summer Girl | 1916 | Writer |
| The Revolt | 1916 | Writer |
| The Gilded Cage | 1916 | Writer |
| The Hidden Scar | 1916 | Writer |
| The Heart of a Hero | 1916 | Writer |
| All Man | 1916 | Writer |
| The Rise of Susan | 1916 | Writer |
| A Woman Alone | 1917 | Writer |
| On Dangerous Ground | 1917 | Writer |
| Tillie Wakes Up | 1917 | Writer |
| A Square Deal | 1917 | Writer |
| A Girl's Folly | 1917 | Writer |
| The Web of Desire | 1917 | Writer |
| Pauvre petite fille riche | 1917 | Writer |
| The Social Leper | 1917 | Writer |
| Forget-Me-Not | 1917 | Writer |
| Darkest Russia | 1917 | Writer |
| The Crimson Dove | 1917 | Writer |
| The Stolen Paradise | 1917 | Writer |
| The Divorce Game | 1917 | Writer |
| Beloved Adventuress | 1917 | Screenplay |
| The Amazons | 1917 | Writer |
| Rebecca of Sunnybrook Farm | 1917 | Writer |
| A Little Princess | 1917 | Writer |
| Stella Maris | 1918 | Writer |
| Amarilly of Clothes-Line Alley | 1918 | Writer |
| L'Enfant de la forêt | 1918 | Writer |
| How Could You, Jean? | 1918 | Screenplay |
| The City of Dim Faces | 1918 | Screenplay |
| He Comes Up Smiling | 1918 | Writer |
| La Petite Vivandière | 1918 | Writer |
| The Goat | 1918 | Screenplay |
| The Temple Of Dusk | 1918 | Writer |
| Captain Kidd, Jr. | 1919 | Writer |
| The Dark Star | 1919 | Writer |
| The Misleading Widow | 1919 | Writer |
| Anne of Green Gables | 1919 | Writer |
| The Cinema Murder | 1919 | Screenplay |
| Pollyanna | 1920 | Screenplay |
| The Flapper | 1920 | Screenplay |
| Humoresque | 1920 | Writer |
| The World and His Wife | 1920 | Screenplay |
| The Restless Sex | 1920 | Writer |
| The Love Light | 1921 | Writer |
| Straight Is the Way | 1921 | Writer |
| Just Around the Corner | 1921 | Writer |
| Back Pay | 1922 | Writer |
| The Primitive Lover | 1922 | Writer |
| Sonny | 1922 | Screenplay |
| Sherlock Brown | 1922 | Writer |
| The Eternal Flame | 1922 | Writer |
| East Is West | 1922 | Writer |
| The Toll of the Sea | 1923 | Writer |
| The Voice from the Minaret | 1923 | Screenplay |
| The Famous Mrs. Fair | 1923 | Screenplay |
| The Nth Commandment | 1923 | Writer |
| The Nth Commandment | 1923 | Producer |
| Within the Law | 1923 | Screenplay |
| The Eagle's Talons | 1923 | Writer |
| Dulcy | 1923 | Writer |
| The French Doll | 1923 | Writer |
| Potash and Perlmutter | 1923 | Writer |
| The Song of Love | 1923 | Screenplay |
| Through the Dark | 1924 | Writer |
| The Dramatic Life of Abraham Lincoln | 1924 | Screenplay |
| Secrets | 1924 | Screenplay |
| Cytherea | 1924 | Screenplay |
| Tarnish | 1924 | Screenplay |
| In Hollywood with Potash and Perlmutter | 1924 | Writer |
| Sundown | 1924 | Writer |
| The Lady | 1925 | Writer |
| His Supreme Moment | 1925 | Screenplay |
| Zander the Great | 1925 | Screenplay |
| A Thief in Paradise | 1925 | Screenplay |
| Ridin' the Wind | 1925 | Writer |
| Lightnin' | 1925 | Screenplay |
| Graustark | 1925 | Screenplay |
| The Dark Angel | 1925 | Writer |
| Thank You | 1925 | Screenplay |
| Lazybones | 1925 | Screenplay |
| Stella Dallas | 1925 | Screenplay |
| The First Year | 1926 | Writer |
| Partners Again | 1926 | Screenplay |
| Paris at Midnight | 1926 | Writer |
| Le fils du cheik | 1926 | Screenplay |
| The Winning of Barbara Worth | 1926 | Writer |
| La Lettre écarlate | 1927 | Screenplay |
| Mr. Wu | 1927 | Writer |
| The Callahans and the Murphys | 1927 | Writer |
| Madame Pompadour | 1927 | Writer |
| Jesse James | 1927 | Screenplay |
| Love | 1927 | Writer |
| Bringing Up Father | 1928 | Writer |
| Le vent | 1928 | Screenplay |
| The Masks of the Devil | 1928 | Writer |
| Their Own Desire | 1929 | Screenplay |
| The Rogue Song | 1930 | Writer |
| Anna Christie | 1930 | Screenplay |
| Big House | 1930 | Writer |
| Let Us Be Gay | 1930 | Writer |
| Good News | 1930 | Screenplay |
| El presidio | 1930 | Writer |
| Min and Bill | 1930 | Writer |
| The Secret Six | 1931 | Writer |
| Révolte dans la prison | 1931 | Writer |
| Le champion | 1931 | Writer |
| Blondie of the Follies | 1932 | Screenplay |
| Cynara | 1932 | Screenplay |
| Secrets | 1933 | Screenplay |
| Dans tes bras | 1933 | Writer |
| Les Invités de huit heures | 1933 | Screenplay |
| Riffraff | 1936 | Screenplay |
| Le Roman de Marguerite Gautier | 1936 | Screenplay |
| Love from a Stranger | 1937 | Screenplay |
| Le Chevalier sans armure | 1937 | Writer |
| L'Enfer vert | 1940 | Screenplay |
