SCCA Region map. Color version dated 1966. Scroll down for more
(http://i586.photobucket.com/albums/ss309/1967z28/map3.jpg)
(http://i586.photobucket.com/albums/ss309/1967z28/map4.jpg)
(http://i586.photobucket.com/albums/ss309/1967z28/map1.jpg)
(http://i586.photobucket.com/albums/ss309/1967z28/map2.jpg)
Not sure of source but this may be 1970's version. A few numbers have changed.