Quilts from the Bill and Camille Cosby collection hang at the Smithsonian's National Museum of African Art in Washington, D.C., in this Nov. 6, 2014, photo. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

Oprah Winfrey gave $12 million Tuesday to help build the Smithsonian's new National Museum of African American History and Culture, seen here in a scale model (lower center). The facility is expected to open in 2015. Allison Keyes/NPR hide caption

itoggle caption Allison Keyes/NPR