Color analysis charts, plates from “Color problems; a practical manual for the lay student of color.” Written by America artist Emily Noyes Vanderpoel, it was published in 1902 with over 100 plates. A selection of these with more to come.

"Solar Spectra," Figures 1 and 2. Figure 1: "From a Prism." Figure 2: From a Diffraction Grating." Plate 2, Page 163. — “Solar Spectra,” Figures 1 and 2. Figure 1: “From a Prism.” Figure 2: From a Diffraction Grating.” Plate 2, Page 163. Collection of and digitalized by the Smithsonian Institutions. In the public domain. via https://archive.org/details/colorproblemspra00vand/page/n162/mode/2up

"The Spectral Colors, Figures A and B. Figure A: In their order of Luminosity. Figure B: Pure and Grayed." Plate IV, page 167. — “The Spectral Colors, Figures A and B. Figure A: In their order of Luminosity. Figure B: Pure and Grayed.” Plate IV, page 167. Collection of and digitalized by the Smithsonian Institutions. In the public domain. via https://archive.org/details/colorproblemspra00vand/page/n166/mode/2up

"Advancing and Retiring Colors." Plate VI. Page 171. — “Advancing and Retiring Colors.” Plate VI. Page 171. Collection of and digitalized by the Smithsonian Institutions. In the public domain. via https://archive.org/details/colorproblemspra00vand/page/n170/mode/2up

colorproblemspra00vand_0185 — “Orange with its Extremes.” Plate XIII, page 185. Collection of and digitalized by the Smithsonian Institutions. In the public domain. via https://archive.org/details/colorproblemspra00vand/page/n184/mode/2up

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