Fellmongers disappeared from the American industrial landscape in the last century. They were specialized meat and leather industry byproducts dealers who also prepared skins and leather from lamb pelts removed in slaughterhouses. In 2000, the last American fellmongers processed a batch of wool inside the Pittsburgh Wool Company. The exercise was captured in a documentary film produced for the Pittsburgh History Center and was documented in reports I prepared for the History Center and for the National Park Service (now in the Library of Congress: HAER No. PA-572).