Possible Clues:

• Conservative speaker losing head, grabbing university steward
• Museum worker
• Dog on a hill, one overseeing museum
• Abrupt old Republican ringing a museum boss
• Guardian article used in court worried Republican
• Superintendent to check detailed roster sent over
• Artist received by court upset museum administrator?
• One in charge having dog roll over
• Art show organizer
• Endless poison's fed to keeper