Oprah Winfrey Network said this afternoon it will pay tribute to Robin Williams on Sunday, repeating two episodes of syndicated The Oprah Winfrey Show in which he appeared.

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In all, Williams appeared on Oprah Winfrey’s syndicated talker 14 times. At 7 PM Sunday, OWN will air his first in-studio appearance on the show, in 1988, when he talked about filming Good Morning Vietnam. At 8 PM, the net will run Williams’ 1991 appearance on the show, when he spoke about drug abuse, marriage, fatherhood, aging, and working on the feature films The Fisher King and Dead Poets Society.

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Photos: Robin Williams, 1951-2014