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Manuscripts (WZ 220-225)

• Used for manuscripts produced before 1601
  • WZ 220—Early Western manuscripts
  • WZ 225—Other early manuscripts

• Manuscripts produced after 1601 are classified at NLM as MS B (Manuscripts Books), MS C (Manuscripts Collections), or MS F (Manuscripts Oversize books)

Modern Versions and Commentaries of Early Works (WZ 290-294)

• WZ 290—Modern versions of early works
  • Used for reprints, facsimiles, or preservation microform of works originally published before 1801
  • Not used for 19th century revised editions of 18th century imprints (use the 19th Century Schedule)
  
  

• WZ 292—Modern collections of early works
  • Used for collections (including serials) which contain pre-1801 works of three or more authors
  • Classify works of only two authors in WZ 290
  
  

• WZ 294—Modern commentaries of early works and bibliographies about single titles
  • Used for studies, commentaries, etc., of pre-1801 works including Americana
    • Classify in WZ 100 if it is largely the biography of one or two authors
    • Classify in WZ 290 works that include the original text unless it is subordinate to the commentary
    
    
  • Used for a bibliography of commentaries on a single work
    • Classify in WZ 100 a bibliography of a single author’s works (Cf. Module 7—Bibliographies and Related Materials)