Well,experts say the expression appears to have been first used in the United States more than one hundred years ago.

VOA: special.2010.01.17

Many years later, Wiley Post would say that first airplane was the most wonderful thing he had ever seen.

VOA: special.2009.03.18

Other experts say glass making first started four to five thousand years ago in ancient Mesopotamia, present day Iraq and Syria.

VOA: special.2009.09.16

Dentists say children should have their first dental visit at least by the time they are one year old.

VOA: special.2009.03.11

Team members say the new car is the first and only one that gives the blind person complete control of the vehicle.

VOA: special.2009.11.03

But traditional guidelines say not to use tPA if more than three hours have passed after the first signs of a stroke.

VOA: special.2009.08.12

President Richard Nixon used to say that the first civil right of every American "is the right to be free from domestic violence."

VOA: special.2009.02.28

LOU COSTELLO: "What I want to find out." BUD ABBOTT: "I say Who's on first, What's on second, I Don't Know's on third."

VOA: special.2009.03.09

Still,medical experts say people should not take aspirin for disease prevention without first talking to a doctor.

VOA: special.2009.10.20

They say babies should be examined when their first teeth appear -- usually at around six months.

VOA: special.2009.03.11

Historians say the Italian scientist and mathematician may not have been the first to get a good look at the moon and planets.

VOA: special.2009.10.27

English language experts say Geoffrey Chaucer was the first important writer to use the English language.

VOA: special.2011.01.05

Historians say the first paper published by blacks in the United States was Freedom's Journal.

VOA: special.2009.04.20

Some people might even say Abijah Long was the first real explorer of Carlsbad Cavern.

VOA: special.2009.12.07