Synaesthesia publications from between 1930 and 1939:

Karwoski, T. F., & Odbert, H. S. (1938). Color-music. Psychological Monographs, 50, 1-60.

Gutman, E. (1936). Artificial psychoses produced by mescaline. Journal of Mental Science, 82, 203-221.

Dudycha, G. J., & Dudycha, M. M. (1935). A case of synesthesia: Visual pain and visual audition. Journal of Abnormal Psychology, 30, 57-69.

Riggs, L. A., & Karwoski, T. (1934). Synaesthesia. British Journal of Psychology, 25, 29-41.

Ortmann, O. (1933). Theories of synesthesia in light of a case of color hearing. Human Biology, 5, 155-211.

Kerr, M., & Pear, T. H. (1932). Synaesthestic factors in judging the voice. British Journal of Psychology, 23, 167-169.

Schliebe, G. (1932). On motor synesthesias. Archiv fuer die Gesamte Psychologie, 85, 289-330.

Wellek, A. (1931). Synesthesia in occidental antiquity and the middle ages. Archiv fuer Gesamte Psychologie, 80, 120-166.

Kerr, M., & Pear, T. H. (1931). Unseen drama and imagery: Some experimental observations. British Journal of Psychology, 22, 43-54.

Vernon, P. E. (1930). Synaesthesia in music. Psyche, 10, 22-39.

Zigler, M. J. (1930). Tone shapes: A novel type of synaesthesia. Journal of General Psychology, 3, 277-286