Historical clue formulations

• Where the National Institutes of Health is headquartered — 2019-07-31
• Neighbor of Chevy Chase — 2015-09-10
• Maryland home of the Walter Reed medical center — 2014-02-24
• National Institutes of Health location — 2008-07-13
• Naval Medical Center locale — 2003-11-22
• Central Park's ___ Fountain — 2003-05-18