William Sloane Coffin, Jr., Yale University, lectured on "Vietnam and the draft: Crisis of Conscience."   One of some 20,000 signatories the previous year of “A Call to Resist Illegitimate Authority,” Coffin was, along with Dr. Benjamin Spock, Mitchell Goodman, Michael Ferber and Marcus Raskin, one of the “Boston Five” indicted by a Federal grand jury on January 5, 1968, on conspiracy charges.  Four of the five, including Coffin, were convicted, but their conviction was overturned in 1970.