Historical clue formulations

• *Person who persists in a hopeless cause — 2025-08-21
• Please, in German — 2025-03-10
• Viennese "please" — 2025-02-23
• "S'il vous plaît," across the Rhine — 2024-08-03
• Response to "Danke" — 2022-08-21
• German "please" — 2020-08-23
• Word with a German request — 2010-08-01
• Please, to Pachelbel — 2008-01-26
• "Please," to Franz — 2007-07-14
• Danke preceder, perhaps — 2005-05-19
• "Please," in Potsdam — 2004-04-20
• Polite word in Potsdam — 2003-11-21
• "You're welcome, Hans!" — 2003-08-13
• Please, in Potsdam — 2003-03-30
• Polite word to a Fräulein — 2002-09-22
• Please, abroad — 2001-07-11
• Please, in Potsdam — 2001-01-02
• Please, in Potsdam — 2000-12-07
• Essen entreaty — 2000-05-10
• Please, overseas — 1996-01-30
• Please, to 48-Across — 1993-12-22