Historical clue formulations

• International aid org. — 2026-08-18
• Humanitarian org. with Halloween fund drives — 2022-02-27
• Humanitarian org. since 1946 — 2019-12-31
• Social welfare grp. with a Peace Prize — 2015-10-04
• International humanitarian grp. — 2015-08-27
• Trick-or-treater's cause — 2014-08-06
• Social welfare org. — 2014-05-18
• Org. that won the 1965 Nobel Peace Prize — 2011-08-11
• 1965 Peace Prize recipient — 2008-05-11
• Social welfare org. — 2000-03-28
• 1965 Peace Prize recipient — 1998-09-17
• Kid-helping org. — 1997-12-04