sentences:  In 1946, the fledgling Pittsburgh Housing Authority published a report on "Negro housing needs," condemning the propensity of African American communities for overcrowding and calling for further assistance to this underserved population.Although the report claims "Large scale demolition […] was largely finished in Pittsburgh by 1940,"the Hill District was to see an ambitious clearance project that would displace 8000 Hill District residents between 1956 and 1960.100 acres, 1300 buildings, and 413 businesses were wiped away by demolition in the "revitalization" project for the Hill.