Historical clue formulations

• Card catalog abbr. — 2015-11-07
• Wolfe or Woolf, e.g.: Abbr. — 2012-10-04
• Title accompanier: Abbr. — 2012-02-23
• Bibliography abbr. — 2010-01-29
• Bibliographical info: Abbr. — 2005-05-14
• Bibliog. info — 2003-02-23
• Datum in a lib. search — 2002-05-05
• Short story-writer — 1997-04-13