Mr. Willard served as Adjunct Professor at Hunter College, City University of New York.

Color

Beck, Jacob, Surface Color Perception. 1972.
Birren, Faber, Color Perception in Art. 1976.
Boring, Edwin G., Sensation and Perception in The History of Experimental
Psychology.1942, Chapter 3.
Chevreul, M.E. Harmony and Contrast of Colors, 1967.
Evans, Ralph M. An Introduction to Color. 1948
Gage, John, Color and Culture. 1993.
Gage, John, Color and Meaning, 1999
Goethe, J.W., Theory of Colours. 1971.
Hall, Marcia, Color and Meaning: Practice and Theory in Renaissance Painting. 1992.
Itten, Johannes, The Elements of Color. 1961
Itten, Johannes, The Art of Color. 1961
Katz, David, The World of Colour. 1935.
Kueppers, Harald, The Basic Law of Color Theory. 1982.
Ratliff, Floyd, Paul Signac and Color in Neo-impressionism. 1992.
Rood, Ogden N.,Modern Chromatics with Applications to Art and Industry. 1908
Sargent, Walter, The Enjoyment and Use of Color. 1964.
Sloane, Patricia, (Ed.), Primary Sources: Selected Writings on Color from Aristotle to Albers. 1991
Vanderpoel, Emily Noyes, Color Problems. 1903.
Willard, Christopher, Watercolor Mixing: The 12-Hue Method, 2000
Willard, Christopher, "Surface Film Color," in Aspects of Color. 1995
Wurmfeld, Sanford, Color Documents: A Presentational Theory. 1985.

Perception and Vision

Alloway, Lawrence, "Systemic Painting," in Battcock, Gregory (ed.), Minimal Art: A Critical Anthology. 1968.
Arnheim, Rudolf, Art and Visual Perception: A Psychology of the Creative Eye. 1957.
Beck, Jacob, Surface Color Perception. 1972.
Fineman, Mark, The Inquisitive Eye. 1986.
Gibson, James J., The Senses Considered as Perceptual Systems. ca. 1966.
Gregory, R.L., Eye and Brain: The Psychology of Seeing. ca. 1966.
Kaufman, Lloyd. Sight and Mind: An Introduction to Visual Perception. 1974.
Kemp, Martin, The Science of Art: Optical themes in western art from Brunelleschi to Seurat. 1990
Kuhn, Thomas S., The Essential Tension. 1977.
Kuhn, Thomas S., The Structure of Scientific Revolutions. 1970.
Moles, Abraham, Information Theory and Esthetic Perception. 1966
Osborne, Harold, Abstraction and Artifice in Twentieth-Century Art. 1979.
Seitz, William C., The Responsive Eye. 1965.
Sternberg, Robert J., The Nature of Creativity: Contemporary Psychological Perspectives. 1988.
Uttal, William R. A Taxonomy of Visual Processes. 1981.
Vitz, Paul C. and Glimcher, Arnold B., Modern Art and Modern Science: The Parallel Analysis of Vision. 1984.
Wolfe, Jeremy M. (Introduction), Readings from Scientific American: The Mind's Eye. 1976.