Correspondence, manuscripts, financial records, subject files, printed material and watercolors of Volkonskai︠a︡. The bulk of the collection consists of letters to Volkonskai︠a︡, who resided most of her life in France. The letters are from friends and relatives and span the period from 1926 to 1959. There are also a small number of letters to and from Vladimir Luginin from the 1860's and 1890's. Among the manuscripts are the memoirs of both Marii︠a︡ Volkonskai︠a︡ and of Vladimir Luginin, as well as manuscript copies of the latter's scientific articles and research notes. The subject files contain materials on provincial parish-based self help societies at the turn of the century and on scientific problems concerning weights and measures, and the mercury thermometer. There are also watercolor sketches by Marii︠a︡ Volkonskai︠a︡.