Harvard at PennsylvaniaDartmouth at Brown  Cornell at Columbia  Cornell at Yale  Chicago at Washington  L.A. Raiders at San Francisco  Last Week  Year to Date Mark T. Brazaitis Sports Editor  Penn 35-20  Dartmouth 14-10  Cornell 28-0  Washington 24-7  San Francisco 40-7  5-1  35-13  .694 Casey J. Lartigue Jr. Assoc. Sports Editor  Penn 31-17  Brown 27-24  Cornell 35-6  Princeton 17-10   Chicago 28-24  San Francisco 37-31  4-2  31-17  .639 Julio R. Varela Asst Sports Editor  Harvard 5-3  Dartmouth 27-10  Cornell 45-7  Yale 17-13  Chicago 38-35  San Francisco 28-27  4-2  26-22  .556 Wilson Goode Mayor of Philadelphia Wharton Grad '69  Penn 27-13  Brown 24-16  Cornell 35-17  Princeton 23-10  Washington 27-21  L.A. Raiders 27-24 Gary L. Susman Arts Editor Broncos Fan  Penn 28-24  Brown 21-20  Cornell 45-14  Princeton 35-21  Washington 42-27  L.A. Raiders 14-10