| Series | | Books |
| |
| Hiram Holliday | | (1939) |
| | | (ss) (1939) |
| | | (ss) (1939) |
| | | (ss) (1939) |
| | | (ss) (1939) |
| | | (ss) (1939) |
| | | (ss) (1939) |
| | | (1940) |
| | | (ss) (1942) |
| | | (ss) (1942) |
| | | (ss) (1942) |
| |
| Other | | The Snow Goose (1941) |
| | | The Lonely (1949) |
| | | The Small Miracle (1950) |
| | | The Abandoned aka Jennie (1950) |
| | | Trial by Terror (1952) |
| | | Snowflake (1952) |
| | | Love of Seven Dolls (1954) |
| | | Ludmila (1955) |
| | | Thomasina aka The Three Lives of Thomasina (1957) |
| | | Mrs. HArris Goes to Paris aka Fowers for Mrs. Harris [Adventures of Mrs Harris] (1958) |
| | | Mrs. Harris Goes to New York [Adventures of Mrs Harris] (1960) |
| | | Too Many Ghosts [Alexander Hero] (1961) |
| | | Confessions of a Storyteller (1961) |
| | | Coronation (1962) |
| | | Scruffy (1962) |
| | | Love, Let Me Not Hunger (1963) |
| | | Day the Guinea Pig Talked (1963) |
| | | Hand of Mary Constable [Alexander Hero] (1964) |
| | | Day Jean-Pierre Was Pignapped (1964) |
| | | The Silent Miaow (1964) |
| | | Mrs. Harris Goes to Parliament aka Mrs. Harris, MP [Adventures of Mrs Harris] (1965) |
| | | Day Jean-Pierre Went Round the World (1965) |
| | | Man Who Was Magic (1966) |
| | | The Hurricane Story (1967) |
| | | Story of the Silent Night (1967) |
| | | Manxmouse (1968) |
| | | The Poseidon Adventure [Poseidon] (1969) |
| | | Foolish Immortals (1969) |
| | | Day Jean-Pierre Joined the Circus (1969) |
| | | Matilda (1970) |
| | | Zoo Gang (1971) |
| | | The Boy Who Invented the Bubble Gun (1974) |
| | | Mrs. Harris Goes to Moscow [Adventures of Mrs Harris] (1974) |
| | | Farewell to Sport (1974) |
| | | Miracle in the Wilderness (1975) |
| | | The Adventures of Jean-Pierre (1975) |
| | | Beyond the Poseidon Adventure [Poseidon] (1978) |
| | | The House That Wouldn't Go Away (1979) |
| |