Since 1896, the Manchester Historic Association has been collecting and sharing documents, pictures and other items from the city’s past. The association also encourages preservation. On April 17th, it will present its 20thannual Preservation Awards, honoring those who have worked to restore historic buildings and traditions in Manchester. Aurore Eaton is the Executive Director. She tells NHPR's Rick Ganley about the awards and the role of the Manchester Historic Association.