2014 Event A 12-page letter written by Robert R. Livingston in 1775 is found by an archivist at the Morris-Jumel Mansion, George Washington's headquarters during the Revolutionary War; the letter explains why Livingston was chosen to help draft the Declaration of Independence 1988 Event Mike Tyson wrecks furniture in his Bernardsville New Jersey Mansion 1978 Birthday Avi Phillips, born in Ontario, actor, Maniac Mansion 1901 Event Theodore Roosevelt renames "Executive Mansion," "The White House" 1892 Event Mrs William Astor invites 400 guests to a grand ball at her mansion thus beginning use of "400" to describe socially elite 1792 Event Washington lays cornerstone of Executive Mansion (White House)