Corridor 7...........................8 and 7........Corridor has 8 letters......a famous speech........near the Dr. King memorial.......Tidal basin........EXIT.............1st and last......................letters........ET..........aliens.......alien invasion............................

Lincoln's address starts with “Four score and seven years ago.” A score is equal to 20 years, so he was referencing 87 years ago — 1776, when the Declaration of Independence was signed. The speech was made, then, seven score and seven years ago.Nov 19, 2010

Seven Score and Seven Years Ago: What You Don't Know ...