Wellek contributed insights he acquired from his familiarities with Russian formalism, the Prague Linguistic Circle, the phenomenology of Roman Ingarden, and the movements of German Geistesgeschichte and stylistics. Warren’s contributions to the work stemmed from his knowledge of American New Criticism, aesthetics, and the history of criticism. Harcourt, Brace and Company published "Theory of Literature" in December 1948 with an imprint of 1949, and at the time of the publication of "Teacher & Critic: Essays by and about Austin Warren", it had been translated into eighteen languages (Spanish, Italian, Japanese, Korean, German, Portuguese, Hebrew, Danish, Serbocroat, modern Greek, Swedish, Rumanian, Finnish, Hindi, Norwegian, Polish, French, and Hungarian, in order).