An English professor has unveiled a recording of what he says is the first time Martin Luther King Jr. said "I Have a Dream" in a public speech.

Months before the civil rights leader gave his famous address at the March on Washington in 1963, he was fine-tuning his message in other venues.

North Carolina State English professor Jason Miller says he discovered the recording of the speech King gave on Nov. 27, 1962, in Rocky Mount, North Carolina. He found it in a library while researching how King drew inspiration from the poetry of Langston Hughes.

Three people in the audience that day in 1962 listened to the recording being played in public for the first time on Tuesday. Dr. Tolokum Omokunde says King's words flowed like liquid.