Margalit, Edna and Avishai, (eds.). Isaiah Berlin: A Celebration. London: Hogarth Press; Chicago: University of Chicago Press, 1991. Biography, introduction

From the Publisher:

“Isaiah Berlin: A Celebration gathers tributes, reflections, and commentaries on the great thinker and his philosophy, politics, and life-including contributions from Michael Ignatieff, Leon Wieseltier, Ronald Dworkin, Stephen Spender, and many others.”

Online:
Amazon