Papers include personal and professional correspondence, documents, manuscripts, photographs, drawings, printed materials. Most of the collection consists of Al'tschuler's personal and professional papers and letters from colleagues, patients and friends. Materials of the collection deal with professional affairs, revolution and civil war in Crimea, Al'tschuller's sanatorium in Yalta, emigration to Constantinople, Germany, Yugoslavia, Bulgaria, Czechoslovakia, activity of such organizations as Russkii zagranichnyi istoricheskii arkhiv and Vserossiiskii zemskii soiuz.