1. Open letter to users of Dr. King's New Life Pills Publication: [Chicago?] : [publisher not identified], [1880?] Subject(s): Nonprescription DrugsGastrointestinal Agents
2. Notes on Finzelberg's pure soluble pepsin (1 to 100): prepared exclusively by H. Finzelberg's Nachfolger, Chemical Laboratory, Andernach on the Rhine Publication: N.Y. : L. Boeker, druggists' printer, [1881?] Subject(s): Pepsin AGastrointestinal Agents