[Portrait made with one of Heimbecker's original ruled screen plates and etched on Sellers' polished copper in Illustrated catalogue and price list of photo engraving supplies and processes]

Sellers, Alfred. Illustrated catalogue and price list of photo engraving supplies and processes, for zinc and copper etching, &c., &c · 1891

"1 half-tone of a portrait using Heimbecker's Ruling screen."--Hanson Collection catalog, p. 112