File #610: "Interviewees’ brother William O’Sullivan right of picture at Heatherside Sanatorium. Left of picture is Irish poet Seán O’ Riordan. Photo courtesy of Michael O’Sullivan."

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Interviewees’ brother William O’Sullivan right of picture at Heatherside Sanatorium. Left of picture is Irish poet Seán O’ Riordan. Photo courtesy of Michael O’Sullivan.