On Friday, February 15, 2019, Sheriff's Officers Steve Harding and Kennon Winters interviewed the witnesses at the scene including the groundskeepers assigned to Rowan Oak the day of the murder and the Rowan Oak curator. They also spoke with the University's Physical Plant Office Manager, who placed the 911 call.

These witnesses were questioned regarding any information they might have about the homicide of Rolf Warner and/or circumstances leading to the homicide. The interviews summarized are some of the most typical or relevant to the investigation and are representative of all interviews conducted.

NOTE: The Rowan Oak building known as "The Servants' Quarters" is also sometimes called "The Tenant House" or "Mammy Callie Barr's house."

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