Historical clue formulations

• Times, Post, Daily News, etc. — 2023-02-27
• News, Post, Tribune, etc. — 2013-12-30
• Researchers' output — 2010-07-31
• Credentials — 2010-05-02
• Professor's workload — 2006-12-21
• Documentation — 2001-05-05
• Star and Sun, e.g. — 2000-01-09
• Proof of pedigree — 1996-09-28
• Print media — 1994-07-22