numismatic literature
auction catalogs
Adolph Hess Nachf., Münzen der Markgrafen und Kurfürsten von Brandenburg und der Könige von Preussen. Sammlung des Herrn Dr. Iur. Killisch von Horn in Berlin; Frankfurt am Main, March 14, 1904
202 pages + 11 plates describing 4325 items + 14 pages of score list; hardcover, bookbinding, score list pasted at back; collection of coins and medals, among them the largest pre-war collection of very rare and some unique coins of Königsberg, including an exceptional 1809 Danzig penny minted on a 1792 Berlin thaler.