Today In History For February 25th

Today is Friday, Feb. 25, the 56th day of 2011. There are 309 days left in the year.

On Feb. 25, 1913, the 16th Amendment to the Constitution, giving Congress the power to levy and collect income taxes, was declared in effect by Secretary of State Philander Chase Knox.

In 1836, inventor Samuel Colt patented his revolver.

In 1964, Cassius Clay (later Muhammad Ali) became world heavyweight boxing champion by defeating Sonny Liston in Miami Beach.