Marin's billboard ban is older than I'd thought, having been adopted in 1936 according to this article: <https://marinmagazine.com/community/history/history-of

Marin's billboard ban is older than I'd thought, having been adopted in 1936 according to this article: <https://marinmagazine.com/community/history/history-of-a-highway/ https://marinmagazine.com/community/history/history-of-a-hig...> At least one billboard, along 101 at the highway cut between San Rafael and Larkspur, survived until the late 1970s or early 1980s, but was burned down in what has been described as the closest an act of arson has come to earning an award of commendation by the Marin County Board of Supervisors. More recently, a "flower billboard" was created, and in 2010 removed, along US-101 in Novato: <https://www.marinij.com/2010/08/24/controversial-flower-billboard-along-101-in-novato-is-taken-down/ https://www.marinij.com/2010/08/24/controversial-flower-bill...> (That article also places the county-wide ban more recently, in the 1970s.)