In reply to Century Misnomer:
A minor clarification: ITC Century Light and Ultra were released in 1975 (announced in Vol. 2, No. 3 of U&lc.), the rest of the ITC Century family (Book, Bold, plus the same four weights Condensed) was released in 1980 (announced in U&lc. Vol. 7, No. 3).
ATF had a Century Bold Extended.