The WPA employed craftsmen to construct hundreds of models of America's past heritage including pioneer dwellings, furniture, implements and tools, and created a series of dioramas that illustrated farm activities, pioneer activities and building interiors. These models and dioramas were used in Museum displays and in the "School Loan Program."visual aides from the WPA Museum Extension projects. They were intended as ways to educate a population that included many immigrant children who were in the process of learning the English language.