This collection consists primarily of correspondence along with some travel diaries, photographs, and teaching materials of comparative literature professor Clarence Brown (1929-2015). Much of the content, with the exception of correspondence with Guy Davenport, relates to the principal subject of Brown's scholarship, Russian poet Osip Emilyevich Mandelstam (1891-1938), as well as Mandelstam's wife, Nadezhda Mandelstam (1899-1980). This includes documentation about Brown's collaborative publication, Osip Mandelstam: Selected Poems (1974); Nadezhda Mandelstam's memoir Hope Against Hope (1970); and Osip Mandelstam's personal papers, which Nadezhda donated to Princeton University Library in 1976; among other topics. Correspondents who are well represented include writer and illustrator, Guy Davenport (1927-2005); poet W. S. Merwin (1927-), Princeton Class of 1948, with whom Brown collaborated on Osip Mandelstam: Selected Poems; and Nadezhda Mandelstam.