More Notable Events on February 16: 1997 At age 25, Jeff Gordon is youngest winner in Daytona 500 history 1988 1st documented combat action by U.S. military advisors in El Salvador 1932 1st patent issued for a tree, to James Markham for a peach tree 1887 1st newspaper convention in Rochester, New York 1878 Silver dollar became U.S. legal tender