This is a photo of Prof. Joe Felsenstein, who is also User:Felsenst on the English Wikipedia. On Sept 8, 2006 Prof. Felsenstein responded to my request on
license: English Sportplatz Walter-Felsenstein-Straße in Berlin-Marzahn, Germany German Sportplatz Walter-Felsenstein-Straße in Berlin-Marzahn heading:
license: English Sportplatz Walter-Felsenstein-Straße in Berlin-Marzahn, Germany German Sportplatz Walter-Felsenstein-Straße in Berlin-Marzahn heading:
English Outdoor gym in the Walter-Felsenstein-Straße in Berlin, Germany German Bewegungsparcours in der Walter-Felsenstein-Straße in Berlin-Marzahn object
Sports ground Walter-Felsenstein-Straße in Berlin-Marzahn as seen from Alfred-Döblin-Straße German Sportplatz Walter-Felsenstein-Straße in Berlin-Marzahn