On Sunday morning, the postman came and there was this letter from the British passport control office in Berlin asking my father to send his and my mother's passport to have the visa entered.

BBC: Today

In a letter to her mother, she wrote: ''As a last wish I have asked that my 'material substance' be left to you.

BBC: Victims of Nazi anatomists named

Along the way, Allman appeared on Eric Clapton's "Layla" in 1970 and was invited to join Mr. Clapton's Dominos: "He wrote my mother a letter about how excited he was by the prospect and how it could mean a better life for us, " said Ms. Allman.

WSJ: A Duane Allman Deep Dive