Here are a list of precedents for the case.
Martin v. Strothers (1943): The right of freedom of speech and press includes not onlt the right to utter or to print, but the right to distribute, the right to receive, and the right to read.
Weiman v. Updegraff (1952): The right of freedom of speech and press includes the freedom of inquiry, freedom of thought, and freedom to teach.
NAACP v. Alabama (1958): The Court protected the freedom of association and privacy in one's associations.
Snyder v. Massachusetts (1934): The Court stated that the Due Process Clause protects those liberties that are so rooted in the traditions and conscience of our people.
United Public Workers v. Mitchell (1947): The Ninth Amendment simply lends strong support to the view that the liberty protected by the Fifth and Fourteenth Amendments from infringement by the Federal Government or the states is not restricted to rights specifically mentioned in the first eight amendments.