One from the trivia department: Berlin newspaper "Der
Tagesspiegel" runs a piece about the tennis courts on Cicerostrasse, which are
in decay and threatened by real estate speculation.
The author, German novelist Peter Schneider, claims that Nabokov has given
tennis lessons on exactly these grounds and also
mentions the well-known photograph showing him with the Siewert sisters.
The text is in German, of course:
Peter Schneider:
Courts on Google maps (via TinyURL):
Best regards,
Christoph Heuke
Wiesbaden, Germany