* Kunsten at undervise i at skrive (1925)
* New Methods for Old:A Practical Guide for Teachers (1925)
* The Psychology of Teaching:An Introduction for Students (1926)
* The English Language Handbook:A Practical Aid to Correct Speaking, Writing and Proofreading (1930)
* The Road to English:A Comprehensive Grammar for Grades IV and V (1931)
* The English Workshop:A Complete Program for the Teaching of English in the Grades (1932)
* The Reading Road to Good English:A Complete Program for the Teaching of English in the Grades (1933)
* The Secret of Teaching:A Guide for the Creative Teacher (1934)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1935)
* The Secret of Teaching:A Guide for the Creative Teacher (1936)
* The New Psychology of Teaching:A Guide for the Creative Teacher (1937)
* The Story of English:An Introduction to English Grammar and Usage (1938)
* The New Secret of Teaching:A Guide for the Creative Teacher (1940)
* The New Story of English:An Introduction to English Grammar and Usage (1941)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1942)
* The Secret of Teaching:A Guide for the Creative Teacher (1943)
* The New Secret of Teaching:A Guide for the Creative Teacher (1944)
* The New Story of English:An Introduction to English Grammar and Usage (1945)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1946)
* The Secret of Teaching:A Guide for the Creative Teacher (1947)
* The New Secret of Teaching:A Guide for the Creative Teacher (1948)
* The New Story of English:An Introduction to English Grammar and Usage (1949)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1950)
* The Secret of Teaching:A Guide for the Creative Teacher (1951)
* The New Secret of Teaching:A Guide for the Creative Teacher (1952)
* The New Story of English:An Introduction to English Grammar and Usage (1953)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1954)
* The Secret of Teaching:A Guide for the Creative Teacher (1955)
* The New Secret of Teaching:A Guide for the Creative Teacher (1956)
* The New Story of English:An Introduction to English Grammar and Usage (1957)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1958)
* The Secret of Teaching:A Guide for the Creative Teacher (1959)
* The New Secret of Teaching:A Guide for the Creative Teacher (1960)
* The New Story of English:An Introduction to English Grammar and Usage (1961)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1962)
* The Secret of Teaching:A Guide for the Creative Teacher (1963)
* The New Secret of Teaching:A Guide for the Creative Teacher (1964)
* The New Story of English:An Introduction to English Grammar and Usage (1965)
* The New Road to English:A Complete Program for the Teaching of English in the Grades (1966)
* Undervisningens hemmelighed:En vejledning til