Mayer, Lance; Myers, Gay (1993). "Understanding the Techniques of American Tonalist and Impressionist Painters". Journal of the American Institute for Conservation. 32 (2): 129–139. doi:10.2307/3179705. JSTOR3179705.
Mayer, Lance; Myers, Gay (1993). "Understanding the Techniques of American Tonalist and Impressionist Painters". Journal of the American Institute for Conservation. 32 (2): 129–139. doi:10.2307/3179705. JSTOR3179705.