Intersection of Laurel Canyon Boulevard and Moorpark Road in North Hollywood with billboard encouraging voters to "Vote No on Proposition 18" visible, 1958. Proposition 18 was the major issue in the gubernatorial race of 1958 between Democratic candidate Edmund G. (Pat) Brown and Republican candidate Senator William Knowland. Los Angeles County, with 41% of the registered voters in the state, was a key area in this campaign and numerous field headquarters for it sprang up in the county. Photographer: King's Photo Services. Black and white photograph, 8 x 10 in.