In 2000 Philipp Gassert and Daniel Mattern reached a similar conclusion. Beginning in 1995 Gassert, an assistant professor of history at the University of Heidelberg, and Mattern, the senior editor at the German Historical Institute, in Washington, D. C., systematically reviewed every volume in the collection. In the spring of 2001 Greenwood Press published the results of their research, The Hitler Library, a 550-page bibliography that lists each book alphabetically, with its author, page count, and call number. Also included are transcriptions of all handwritten dedications, some brief descriptions of marginalia, and an indication of which books contain the Fhrer's bookplatean eagle, a swastika, and oak branches between the words EX LIBRIS and ADOLF HITLER.