1. “Basic Correlates of the Visual Stimulus,” in Ed., Handbook of Experimental Psychology, Wiley, New York, 1951.
2. Spectral sensitivity of the foveal cone photopigments between 400 and 500 nm
3. Report of U.S. Secretariat Committee on Colorimetry and Artificial Daylight, in Proc. CIE I, Part 7 (Stockholm, 1951), Bureau Central de la CIE, Paris, 1951, p. 11.
4. Visual Sensitivities to Color Differences in Daylight*