Hoover’s documentation on Ignacy Paderewski and the restoration of Poland after World War I has expanded substantially during the past several years, first with the acquisition of the papers of Ernest Schelling, Paderewski’s American student and friend, which included the memoirs of Helena Paderewska, and now with the arrival of the archives of Zygmunt Iwanowski (1874–1944), another of the prime minister’s close associates and supporters.