1. The Transfer of Training in High School Latin to English Grammar, Spelling, and Vocabulary
2. Hamblen, A. A. A Statistical Study to Determine the Amount of Automatic Transfer from a Study of Latin to a Knowledge of English Derivatives, and to Determine the Extent to which this Amount may be Increased by Conscious Adaptation of Content and Method to the Attainment of this Objective. Doctor’s Dissertation, University of Pennsylvania, 1924.
3. Haskell, R. I. A Statistical Study of the Comparative Results Produced by Teaching Derivation in the Ninth-Grade Latin Classroom and in the Ninth-Grade English Classroom to non-Latin pupils. Doctor’s Dissertation, University of Pennsylvania, 1924.
4. Influence of the Study of Latin on Word Knowledge