Secretary of State No.
ARTICLE XXIV STATE HIGHWAYS. A system of statehighways is hereby established composed of the highways named in this section and all other highways heretofore declared to be state highways. All highways in said system are hereby classified as Primary State Highways or Secondary State Highways. The following named highways are hereby declared to be and classified as Primary State Highways, the route numbers given being the numbers heretofore given said routes or portions of routes by the California Highway Commission:
State Highways California Initiative 1926-s-1 (1926).