Conversation so far:
What information did Miller refuse to disclose source for?
Miller was jailed for contempt of court for refusing to testify before a federal grand jury investigating a leak naming Valerie Plame as a CIA officer.
Did the information eventually come out?
According to a subpoena, Miller met with an unnamed government official, later revealed to be I.
Lewis "Scooter" Libby, Vice President Cheney's Chief of Staff, on July 8, 2003.

Question: When was the court appearance?
Self-contained rewrite: When was the court appearance for  Judith Miller?