On this date in...

1860...Abraham Lincoln speaks at Cooper Union against the evils of slavery, but New Yorkers pay little attention.

1993...A day after a huge bomb rocks the World Trade Center, the Twin Towers are shut down while repairs are made as hundreds of businesses are temporarily displaced. Authorities, meanwhile, begin the hunt for the perpetrators – a search that will eventually lead to the arrest of mastermind Ramzi Yousef and four other Islamic fundamentalists.