Synaesthesia publications from between 1940 and 1949:

Reichard, G. A., Jakobson, R., & Werth, E. (1949). Language and synesthesia. Word, 5(224-233).

Howells, T. H. (1944). The experimental development of color-tone synesthesia. Journal of Experimental Psychology, 34, 87-103.

Odbert, H. S., Karwoski, T. F., & Eckerson, A. B. (1942). Studies in synesthetic thinking I: Musical and verbal associations of color and mood. Journal of General Psychology, 26, 153-173.

Karwoski, T. F., Odbert, H. S., & Osgood, C. E. (1942). Studies in synesthetic thinking II: The role of form in visual responses to music. Journal of General Psychology, 26, 199-222.

Omwake, L. (1940). Visual responses to auditory stimuli. Journal of Applied Psychology, 24, 468-481.