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Left to right:
Oliver Muth, his wife Grace Pifer Muth.
Ruth Alma Muth Henneman, sister of Oliver and her husband Harry Henneman.
They all originally lived in the Big Run area of Jefferson County, in western Pennsylvania. Harry and Ruth then lived in DuBois, PA.
Photo belonged to Almetta Henneman Laughlin, daughter of Ruth. The date of the picture is unknown but it could possibly have been taken when Harry and Ruth married in 1911.