Archive/Manuscript — 10 ms. boxes, 1 oversize box, 1 album box, 2 envelopes, 1 motion picture film reel, memorabilia.
Correspondence, speeches and writings, clippings, printed matter, and photographs, relating primarily to the establishment of an independent Polish state, the Paris Peace Conference, Polish politics in the interwar period, the occupation of Poland during World War II, and the musical career of I. J. Paderewski.
Writings, correspondence, notes, genealogical charts, certificates, and photographs, relating to the history of the Svi͡atopolk-Mirskiĭ family from the tenth to the twentieth century, and to Russian émigré affairs. Consists mainly of drafts of and working materials for a genealogical history. Includes photographs of Emperor Nicholas II and Empress Alexandra.