* Auktionshaus Sotheby’s New York - [http://www.sothebys.com/en/auctions/ecatalogue/2012/important-old-master-paintings-n08825/lot.84.html Auktion "Der Arme Poet"] | * Auktionshaus Sotheby’s New York - [http://www.sothebys.com/en/auctions/ecatalogue/2012/important-old-master-paintings-n08825/lot.84.html Auktion "Der Arme Poet"] |