Lantern slides : how to make and color them (1895)
Elmendorf, Dwight L. (Dwight Lathrop), 1859-1929 · New York : E. & H.T. Anthony & Co. · leaf 78
64 They should be well made, and come to a point when wet. For skies and water, or for general tints and blending, half-inch flat camel's-hair brushes should be used. 3. A large glass, capable of holding a pint of water, should be at hand, convenient for imme- diate use at all times. … 4. For the purpose of adding water to the colors, there is nothing better than a rubber pipette, often used as medicine droppers, or for filling fountain pens. 5. A clean cloth attached to the table for the purpose of wiping color from brushes. 6. A retouching frame, such as is used for re-…
Slides (Photography)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.