Gibson v. Florida Legislative Investigation Committee, 372 U.S. 539 (1963), was a United States Supreme Court case based on the First Amendment to the U.S. Constitution. It held that a legislative committee cannot compel a subpoenaed witness to give up the membership lists of his organization.^[1][2]

In 1956, a committee of the Florida Legislature initiated an investigation of the National Association for the Advancement of Colored People (NAACP)'s Miami branch. When the authority of this committee expired, a new committee was formed in 1957 to pursue the same inquiry. This new committee subpoenaed the branch's membership list. Production of such information was refused.^[2] Due to this refusal, the president of NAACP's Miami branch was convicted of contempt, sentenced, and fined. ^[3][4]

The Supreme Court held that the conviction violated rights of association under the First and Fourteenth Amendments.^[2]

• Works related to Gibson v. Florida Legislative Investigation Committee at Wikisource
• Text of Gibson v. Florida Legislative Investigation Committee, 372 U.S. 539 (1963) is available from: CourtListener Findlaw Google Scholar Justia Library of Congress Oyez (oral argument audio)
• First Amendment Library entry on Gibson v. Florida Legislative Investigation Committee Archived 2005-09-20 at the Wayback Machine