Frankfurt am Main's Lord Mayor Peter Feldmann and Philadelphia Mayor Michael A. Nutter sign the Sister City Agreement in Frankfurt's Römer (City Hall) on July 16, 2015.
German Newpaper Articles
Frankfurter Allgemeine Zeitung, July 17, 2015
Frankfurter Neue Presse, Friday, July 17, 2015
Bild Frankfurt, Fiday, July 17, 2015
Frankfurter Rundschau, Friday, July 17, 2015