Baltimore, Maryland. Building the SS Frederick Douglass. More than 6,000 Negro shipyard workers are employed at the Bethlehem-Fairfield shipyards where the Liberty ship is being rushed to completion. The noted orator and abolitionist worked as a ship caulker in the vicinity of this yard before he escaped from slavery. James Bibons, soldier in the battle of production, carrying insulated electric cables for engine room - digital file from intermediary roll film