Kurt Weill and Lotte Lenya Papers

In the Irving S. Gilmore Music Library of Yale University. Includes an online index to the music of Kurt Weill as well as standard archival listings such as an overview and scope of the collections, inventory by box, biographical sketch and Library of Congress Subject Headings (listings of the other names of people with materials in the collections.)
http://webtext.library.yale.edu/xml2html/music.Weill.nav.html