 After taking the volume through three decades and four new editions, Mudge retired and passed the responsibility on to her successor at Columbia University, Constance Mabel Winchell.Winchell reorganized the book, classifying the indexes into different disciplines similar to the academic departments of a university.The indexes were greatly expanded under Winchell; when the eighth edition was published in 1967 it was quite a tome, including entries on some 7500 individual publications.