Radziwiłł Chronicle, late 15th century: envoys stand before a seated ruler, with armed horsemen behind them; the words of the invitation in the Radziwiłł text are written above the picture.Unknown illuminator, Radziwiłł (Königsberg) Chronicle, Library of the Russian Academy of Sciences, St Petersburg; image via Runivers and Wikimedia Commons, late 15th century · Public domain (Commons template PD-old-100-expired) · Wikimedia Commons