At an SDS convention in Chicago on June 18, 1969, the National Office attempted to persuade unaffiliated delegates not to endorse a takeover of SDS by Progressive Labor who had packed the convention with their supporters.[12] At the beginning of the convention, two position papers were passed out by the National Office leadership, one a revised statement of Klonksy's RYM manifesto, the other called "You Don't Need a Weatherman to Know Which Way the Wind Blows".