Beatrice Mandelman traded Manhattan for Taos just as New York exploded into the center of modern art. But the political prints she produced as a Works Progress Administration artist would resonate throughout hercareer, surfacing again in the vibrant collages she produced in the 1960s. The Harwood Museum of Art is celebrating what would have been the Taos modernist’s 100th birthday with twin showings of “Bea Mandelman: The Social Realist Prints” and “Bea Mandelman: Collage” th