"The Calling" included this song which she performed at the fortieth anniversary concert, "Why Shouldn't We?"

VOA: special.2010.04.19

April twenty-second marks the fortieth anniversary of Earth Day.

VOA: special.2010.04.21

Over at competitor General Electric, actor Ronald Reagan -- later the fortieth president of the United States -- and often referred to as the Great Communicator, was for many years an effective commercial spokesman every week on the GE Theater.

VOA: special.2011.07.21

Rounder Records celebrated its fortieth anniversary with a concert in October at the Grand Ole Opry in Nashville,Tennessee.

VOA: special.2010.04.19

Faith Lapidus has more. The festival is celebrating its fortieth anniversary this year.

VOA: special.2009.05.01