It was before August 1967. Because it was mentioned in a Barron's article at that time regarding the National Conference on New Politics":
"Among the members of the National Conference for New Politics national council and executive board are: Paul Albert, California Democratic Council; Donna Allen, Women Strike for Peace; Julian Bond, Georgian State Legislature; Paul Booth, national council, Students for a Democratic Society; Reverend William Sloan Coffin, Jr., chaplain, Yale University; Victoria Gray, Mississippi Freedom Democratic Party; Dick Gregory, actor; Martin Peretz, Committee on Social Studies, Harvard University; Robert Scheer, publisher, Ramparts magazine; Monroe Wasch, American Federation State, County & Municipal Employees; Henry Wineberg, Committee for Independent Political Action, Chicago; and Michael Wood, former member of the National Student Association who leaked to Ramparts information about the operations of the Central Intelligence Agency".Not sure if I've seen Michael Wood before. We've seen most of the others mentioned often. Robert Scheer is now a columnist with the Los Angeles Times. Martin Peretz is currently involved in various investments in Colorado with Sam Brown (Action/VISTA).
I'm not familiar with Wood, either.