From the Mixed-Up Files of Mrs. Basil E. Frankweiler From the Mixed-Up Files of Mrs. Basil E. Frankweiler is a novel by E. L. Konigsburg .
From the Mixed-Up Files of Mrs. Basil E. Frankweiler From the Mixed-Up Files of Mrs. Basil E. Frankweiler is a novel by E. L. Konigsburg that won the Newbery Medal for excellence in American children 's literature in 1968 .