* The House Between (1938)
* No Stranger to the Stars (1939)
* Vind fra bjerget (1941)
* This Is My Best (samforfattet med George P. Abraham, 1942)
* Kald den nye verden (1943)
* Kaptajn Garfio og andre historier (1951)
* Peter Cottontail og andre historier (1951)
* Kongens stylter og andre historier (1952)
* The Story Garden (1952)
* Snowshoe Paws and Other Stories (1952)
* Big Cheese and Other Stories (1953)
* Danny Meadow Mouses eventyr og andre historier (1953)
* Lille hund Toby og andre historier (1954)
* Mr. Whistles hemmelighed og andre historier (1955)
* Prinsen og gåsepigen (1955)
* Old Man Possum og andre historier (1956)
* That Girl Judy (1957)
* Mystery at Thunderbolt House (1958)
* Min søster Mike (1958)
* Secret of Hollow Tree Camp (1959)
* Året julemanden blev moderne (1959)
* Shadow of a Secret (1960)
* Nancy Clark, hemmelig agent (1961)
* Nancy Clark, Trouble Shooter (1961)
* The Secret of the Hidden Room (1961)
* Nancy Clark, udenrigskorrespondent (1962)
* Nancy Clark, Mystery Girl (1963)
* The Golden Slippers and Other Stories (1963)
* Nancy Clark, pigereporter (1963)
* Time for Tomorrow, Janet Carroll (1963)
* Nancy Clark, News Hen (1964)
* Skattekassen (1964)
* Nancy Clark, politireporter (1965)
* Nancy Clark, samfundsreporter (1966)
* The Mystery Girl Next Door (1966)
* Nancy Clark, Model for Murder (1967)
* Nancy Clark, Danger Ahead (1968)
* Katten i spejlet og andre historier (1968)
* Nancy Clark, Dobbelt identitet (1969)
* The Mystery Next Door (1969)
* Nancy Clark, Assignment Murder (1970)
* The Secret of the Magic Box (1970)
* The Haunted Lighthouse and Other Stories (1971)
* Mysteriet ved Devil's Cove (1972)
* Mysteriet med den stjålne ring (1973)
* The Mystery at Lonely Point (1974)
* The Whispers in the Dark (1975)
noveller
* "Huset mellem" (1938)
* "No Stranger to the Stars" (1939)
* "Vind fra bjerget" (1941)
* "Call the New World" (1943)
* "Kaptajn Garfio" (1951)
* "Peter Cottontail" (1951)
* "Kongens stylter" (1952)
* "Sneskopoter" (1952)
* "Big Cheese" (1953)
* "The Adventures of Danny Meadow Mouse" (1953)
* "Lille hund Toby" (1954)
* "Mr. Whistles hemmelighed" (1955)
* "Prinsen og gåsepigen" (1955)
* "Old Man Possum" (1956)
* "Den pige Judy" (1957)
* "Mystery at Thunderbolt House" (1958)
* "Min søster Mike" (1958)
* "Secret of Hollow Tree Camp" (1959)
* "Året, julemanden blev moderne" (1959)
* "Skyggen af en hemmelighed" (1960)
* "Nancy Clark, hemmelig agent" (1961)
* "Nancy Clark, Trouble Shooter" (1961)
* "Hemmeligheden bag det skjulte rum" (1961)
* "Nancy Clark, udenrigskorrespondent" (1962)
* "Nancy Clark, Mystery Girl" (1963)
* "Time for Tomorrow, Janet Carroll" (1963)
* "Nancy Clark, pigereporter" (1963)
* "Nancy Clark, News Hen" (1964)
* "Skattekassen" (1964)
* "Nancy Clark, politireporter" (1965)
* "Nancy Clark, samfundsreporter" (1966)
* "The Mystery Girl Next Door" (1966)
* "Nancy Clark, model for mord" (1967)
* "Nancy Clark, Danger Ahead" (1968)
* "Katten i spejlet" (1968)
* "Nancy Clark, dobbelt identitet" (1969)
* "The Mystery Next Door" (1969)
* "Nancy Clark, Assignment Murder" (1970)
* "The Secret of the Magic Box" (1970)
* "The Haunted Lighthouse" (1971)
* "Mysteriet ved Devil's Cove" (1972)
* "Mysteriet om den stjålne ring" (1973)
* "Mysteriet ved Lonely Point" (1974)
* "The Whispers in the Dark" (1975)