A. MS. small red notebook
("Color Miscellaneous" written on the cover), n.p., n.d., with exception of entries on p. 27 (6/9/866/28/87). Fechner's Law applied to color, Spectra. Theory of Luminosity. Tables reporting the results of several experiments.
Color experiments, Fechner's law, Light and Luminosity, Physics (review of books on), Spectra