A federal judge ruled Thursday that an anti-gay marriage group must provide records associated with last fall's campaign to ban gay marriage in California, The Associated Press reported.

U.S. District Chief Judge Vaughn Walker in San Francisco has ordered ProtectMarriage.com to produce internal emails, memos and records associated with its strategy to ban gay marriage in the state.

ProtectMarriage.com is the sponsor of Proposition 8, the voter-approved referendum that ended the June-to-November “Summer of Love” in California when gay marriage was legal.

Opponents of the law – led by the legal team of Theodore Olson and David Boies – have challenged its constitutionality in federal court. Over the objections of the law's defenders, Walker set a January 11, 2010 trial date in August. Olson has said he expects the suit to reach the Supreme Court.

ProtectMarriage.com, represented by the Christian conservative group the Alliance Defense Fund, argued that making Proposition 8 discussions between top campaign officials public would violate the group's free speech rights and subject supporters to harassment.

Walker disagreed and order the group to provide the records.