When appointed to the Supreme Court in 1970 by President Nixon, Harry A. Blackmun was seen as a quiet, safe choice to complement the increasingly conservative Court of his boyhood friend, Warren Burger. No one anticipated his seminal opinion championing abortion rights in Roe v. Wade, the most controversial ruling of his generation, which became the battle cry of both supporters and critics of judicial power and made Blackmun a liberal icon.

Harry A. Blackmun: The Outsider Justice is Tinsley E. Yarbrough's penetrating account of one of the most outspoken and complicated...