Materials collected by Robert P. Alexander, acquired by him chiefly between 1975 and 1985. The collection includes photocopied, reprinted, or excerpted articles from periodicals and chapters from books, abstracts, copies of typed manuscripts, and some non-book format materials (e.g. sound recordings, slides, etc.). The source of each item is generally typed or handwritten on the piece, although the source is not recorded in every case. Some soft-bound longer monographic works are also included in the collection. The collection includes materials issued from the late 18th century (i.e., in modern editions or photocopies) through the first half of the 1980s, with the bulk of the collection dating from the late 19th century onwards.