 As Susan Stryker and Michael Meeker note in a new preface to Lou Rand's "The Gay Detective" (1965), San Francisco area LGBT historians found that the paperback in question turned out to be a valuable document in describing past prominent if closeted social figures, ethnic conflicts over police corruption and the emergence of a narcotics underworld in their city, as well as referring to bygone LGBT venues.Some of the titles issued by these presses in the late 1960s blurred the lines between literary gay fiction and pornography.While all of them include more explicit sexual content than literary novels or mainstream, non-sexual paperback fiction (Westerns, romances, etc.)