[Each year, RBS offers about 40 five-day non-credit courses for adults on topics concerning old and rare books, manuscripts, and special collections. The educational and professional prerequisites for RBS courses vary. Some courses are broadly directed toward antiquarian booksellers, book collectors, bookbinders, conservators, teachers, and professional and avocational students of the history of books and printing. Others are primarily intended for archivists and for research and rare book librarians and curators.]