"BLACKMUN'S AUTHORSHIP OF ROE V. WADE and Doe v. Bolton became the signature event of his 24 years on the court. The pair of cases challenging anti-abortion statutes in Texas and Georgia was decided during Blackmun's third term as a justice. Yet even then, Blackmun allowed his clerks to play influential roles not only in drafting the two opinions but also in honing the constitutional standards that made the two cases famous. Even before Roe and Doe arrived at the court, Blackmun was clearly comfortable with interpreting the Constitution to protect women's access to abortion. Writing to himself just prior to the oral argument in United States v. Vuitch, the court's first abortion case, in January 1971, Blackmun noted that the 1965 case Griswold v. Connecticut, which upheld the right of married couples to use contraceptives, and the 1969 case Stanley v. Georgia, which protected the possession of pornography in the home, "afford potent precedence in the privacy field. I may have to push myself a bit, but I would not be offended by the extension of privacy concepts to the point presented by the present case." At conference, however, the justices decided Vuitch on grounds that allowed them to avoid the constitutional privacy issue. When Blackmun began preparing for Roe's initial oral argument in December 1971, his notes about the case reiterated his comments about Vuitch. "A fundamental personal liberty is involved here—right to receive medical care," he wrote. "Much precedent for this sort of thing—Griswold et al." After argument and the justices' private conference, Burger assigned Blackmun to write the opinions in Roe and Doe."
January 1, 1970
https://en.wikiquote.org/wiki/Roe_v._Wade