The Federal Bureau of Investigation (FBI) attempted to use librarians as possible informants in the conspiracy case of the Harrisburg Seven in 1971. The Harrisburg Seven, made up of religious anti-war activists, were primarily accused of conspiring to kidnap National Security Advisor Henry Kissinger. The supposed leader of the group, Philip Berrigan, was serving time at the Lewisburg penitentiary. The FBI sought "to use library surveillance and librarian informants" at Bucknell University as evidence of the Harrisburg Seven's "characters and intentions." Boyd Douglas became one such informant for the FBI: he was a prisoner at the same penitentiary with a work-release position at the library. Boyd presented himself as an anti-war activist and offered to smuggle letters he collected while at work to Philip Berrigan at the prison.