{"value"=>"<p>The files for the 1961 revision of Black Metropolis consist for the most part of correspondence, a new introduction and some unused material from the 1945 edition, an early prospectus, royalty statements, and data on social clubs in Chicago in the 1930s and on racially motivated violence against blacks. Also included are miscellaneous materials for the 1969 and 1980 revisions.</p>"}