Professor Dragich uses the Blackmun papers to augment our understanding of Justice Blackmun's "evolution" on the question of capital punishment. Though the evolution was gradual, she finds that the case of Warren McCleskey seems to have deeply affected Justice Blackmun.
Martha J. Dragich, Revelations from the Blackmun Papers on the Development of Death Penalty Law, 70 Mo. L. Rev. 1183 (2005)