The whispers started and grew until the word "freedom" was loud in thousands of slaves' mouths. It was April 16, 1862. The president signed a paper, and 3,100 D.C. slaves were freed — Emancipation Day. Many African-Americans in this city see it as the start of a new life for their ancestors. But emancipation didn't immediately end the role of slave traders in the city. Anacostia Unmapped contributor John Johnson explains how a historic day also came with a "punch in the gut."

And also in this edition of Anacostia Unmapped, we hear the voice of Fountain Hughes — a slave in nearby Virginia who recorded an interview with the Library of Congress in 1949. It's of the few surviving audio interviews of ex-slaves.