Ever wanted to know who Uncle Sam really was? If so, head on over to the USS Constellation on Saturday. Living-history interpreter Kevin Rawlings will portray Uncle Sam, and he'll discuss the man behind the famous 19th-century painting - Samuel Wilson - who helped to shape the image of America's favorite uncle and symbol of our federal government.

The event runs 10 a.m.-6 p.m. Saturday aboard the USS Constellation, Pier 1 at the Inner Harbor. $6.50; $3.50 ages 6-14; $5 seniors; free for ages 5 and under. Call 410-539-1797, Ext. 432.