Historical clue formulations

• Bygone Ottoman rulers — 2016-01-14
• Bygone Tunisian V.I.P.'s — 2011-11-29
• Old African rulers — 2000-07-01
• Bygone Tunisian V.I.P.'s — 1997-09-23
• Old Tunisian rulers — 1996-03-18
• Old Algerian titles — 1995-10-12
• African rulers — 1994-02-20
• Tunisian rulers, once — 1994-01-27