[Halftone and collotype in Photo-engraving, photo-etching, and photo-lithography in line and half-tone]

Wilkinson, W. T. Photo-engraving, photo-etching, and photo-lithography in line and half-tone also collotype and heliotype · 1895

"1 three-color half-tone, 1 three-color collotype...is of interest because of the two color prints that are present. The first is a three-color half-tone by Dr. R.D. Grey [sic], of New York, who was an antagonist of Frederick Ives because of his contention that he, Grey [sic], was involved in three-color photography before Ives. This very fine outdoor photograph shows that he had mastered a very difficult medium at a very early date. The other image is of a fan produced in three-color collotype by Ernest Edwards. This image is not as accurate as the scene in the Brooklyn Botanical Garden from 1894, but is still an important early example."--Hanson Collection catalog, p. 124