New Social Security board member takes oath. Washington, D.C., Aug 23. Miss Mary W. Dewson, Chairman of the Women's Division of the Democratic National Committee, taking the oath of office today as a member of the Social Security Board. She succeeds Vincent M. Miles, whose commission expired August 13. In the photograph, left to right: George L. Scott, Chief Clerk of the Social Security Board Administering the oath; Edwin Bigge, member of the Board; Miss Dewson, And Frank Bane, Executive Director of the Board