Jacob Frederick Schoellkopf

Sample Book, Acid Colors on Silk, Series A-18 and Series A-19, Schoellkopf, Hartford & Hanna Co., American Aniline Colors, July…

Medals for excellence won by Schoellkopf, Hartford & Hanna Co. From The American Colorist and Dye Topics 1, no. 1…

American Aniline Colors Dye Samples produced by Schoellkopf, Hartford & Hanna Co. From The American Colorist and Dye Topics 1,…

Branch Offices and Logo of Schoellkopf, Hartford & Hanna Co. From The American Colorist and Dye Topics 1, no. 1…

Bird's-eye view of Buffalo, New York, at the turn of the twentieth century. Created by Landis & Alsop, Newark, NJ,…

National Aniline & Chemical Co., Inc. Advertisement, Dyestuffs 12, no. 9, September 1921, n.p.

Bird's-eye map of Niagara Falls, New York, in 1882.The map presents a perspective looking from Canada into the United States…

Jacob F. Schoellkopf Jr., Friedrich Koehler, and Henry Merz’s testimony in 1888 about American aniline chemical production and tariff reforms…