One of six letters by Polish composer and pianist Frederic Chopin recently acquired and put on display at the Frederic Chopin Museum in Warsaw, Poland on Thursday, March 24, 2011. The letters along with over 40 other items had been believed lost in World War II, but resurfaced in recent years and have been donated to the museum by a Polish ZmigrZ art dealer Marek Keller. (AP Photo/Czarek Sokolowski)