Interesting SF Chronicle piece with comments from Warren Hinckle:
Notorious S.F. pioneer of porn films
Jim Mitchell, who helped bring eroticism into the political and social consciousness of San Francisco and later was imprisoned for the sensational killing of his brother, died apparently of a heart attack at his home in western Sonoma County, investigators said Friday.
...
But then-Mayor Dianne Feinstein did not see much humor in the peddling of porn. Her attempts to shut the brothers down came to a head when her unlisted phone number was placed on the theater marquee with the words "For a Good Time, Call ..."