Publicó "The Contemporary novel of Ecuador" (Ann Arbor, 1953), una edición anotada de "Fiestas", de Juan Goytisolo y, junto a Richard Eugene Chandler, de una "New History of Spanish Literature" (Baton Rouge: Louisiana State University Press, 1961, segunda edición revisada ídem, 1991) y una complementaria "A New anthology of Spanish literature" (1967) en dos volúmenes; otras obras suyas son "A new history of Spanish American fiction"; "The meaning of existence in contemporary Hispanic literature" (1970) e "Introduction to modern Spanish literature; an anthology of fiction, poetry, and essay".