Biography made superb use of newsreel footage, while Wallace's narration was pitched to an adult intelligence, never telling you what you were seeing, but letting the pictures speak for themselves.
Revisionists might argue with some of the subjects, but Biography managed to present in 30 minutes an elegant encapsulation of an important life (and no, Wallace didn't tell you "what to think.) I wish these were made available for young people to learn about the century just past.
American TV has come a long way down from Biography to the dumbed-down biographies on A&E.