 As director of the Met, Rorimer proved to be a capable administrator, though his directorship was plagued by contentious battles with trustees and the museum's staff.Nonetheless, the Met acquired many new and significant works during his eleven-year tenure, including Rembrandt's "Aristotle Contemplating the Bust of Homer," and attendance at the museum tripled from 2 million to 6 million visitors annually.In September and October 1965, under Rorimer's leadership, the Museum hosted the first International Council of Museums annual meeting to be held outside of Europe.