Historical clue formulations

• Part of Manhattan where the United Nations is located — 2020-01-06
• Where the lowest-numbered avenues in Manhattan are — 2018-09-18
• Manhattan region — 2014-09-03
• Where the United Nations is in Manhattan — 2012-08-27
• First and Second Avenues area, in Manhattan — 2005-01-18
• Manhattan flank — 1994-12-11