Samuel Black (right) and his wife, Edda Fields-Black.
In this week's StoryCorps Griot, we hear about John L. Black, Sr., who worked in the boiler rooms of Cincinnati's public schools for nearly 30 years.
His son, Samuel Black, went to a StoryCorps booth in Pittsburgh, Pa., to share memories of his father. He tells his wife, Edda Fields-Black, about his dad's dedication to his job.
The StoryCorps Griot Booth is currently in Oakland, Calif. The next stop is Clarksdale, Miss.
All the Griot Initiative recordings are archived at the Library of Congress. A copy of each interview will also go to the National Museum of African American History and Culture in Washington DC.
Katie Simon produced this segment.