KopjePiper, Alfred gebruikt in: Integrated Authority File (GND), Germany
NaamsvariantPiper, Alfred Friedrich Ludwig Albert
Alfred Piper (1814-1892), Oberbürgermeister von Frankfurt (Oder) [Unknown authorUnknown author / IX 399 Dokumentenbuch Nr. 8 a, Stadtarchiv Frankfurt (Oder) -- Public domain -- http://commons.wikimedia.org/wiki/File:Alfred Piper.jpg]