Complex sentence: Challinor serves as the Chairperson of the Advisory Committee of the Arthur and Elizabeth Schlesinger Library on the History of Women in America at Radcliffe College, and she is a member of the Madison Council at the Library of Congress.
Split into simpler sentences: Challinor serves as the Chairperson of the Advisory Committee of the Arthur and Elizabeth Schlesinger Library on the History of Women in America at Radcliffe College. She is a member of the Madison Council at the Library of Congress.