What was known in the United States as the ‘underground press’ – self-published newspapers of the youth counterculture sold at street corners and around campuses in American cities during the 1960s and early 70 s – was once a significant network estimated at over 400 publications. Their hallmark was opposition to US involvement in the Vietnam War, criticism of the authorities, of uncontrolled technology and big business, advocacy of sexual freedom and artistic experimentation and, frequently, the advocacy of marijuana, LSD and other psychedelic drugs. Few of these publications have survived the past ten years, and their disappearance has been variously attributed to the cooling of radical interest after the American withdrawal from Vietnam, as well as to the vague and shifting nature of the ‘hippie’ scene. Complaints by their publishers during the early and mid-seventies that printers refused their business, that office rents suddenly doubled, that advertising was cancelled, that papers were lost – these were seen as local accidents and were rarely reported by the established media. Claims of official or officially-sanctioned harassment were dismissed – even by fellow radicals – as paranoid. Recent research by Geoffrey Rips of the PEN American Center has revealed the extent and variety of official pressure exerted against alternative publications during the Vietnam War period. Using evidence from government hearings like the Church Committee, which reported in 1976, actual FBI documents released to American PEN under the Freedom of Information Act, and other sources, Mr Rips argues that such harassment contributed materially to the closure of certain publications and in general terms constituted a gross infringement on the protection afforded to dissenting opinion and to a free press under the US constitution. We publish edited extracts here from Geoffrey Rips' report which will be published in full by the PEN American Center and the City Lights Press.