Historical clue formulations

• 100, in Italy — 2018-06-14
• Poem comprised of quotations — 2012-04-28
• 100, in Italy — 2010-03-10
• Italian 100 — 2009-01-25
• Baghdad Pact predecessor: Abbr. — 1999-05-22
• Poetic patchwork — 1994-10-09