The Master Planning Committee presented the final plans for an extension to the Library, Helmuth, Obata and Kassabaum, architects. This plan for the new wing, with a limestone facade, replaced earlier plans of an extension that caused controversy on campus, as their extensive use of glass was, critics said, out of keeping with the origina building.   Funding for the new construction came from the bequest to the college of Helen D. Lockwood ’12, who died in 1972.  The Helen Lockwood addition opened in 1977.