Taken in Snyder Co, PA, probably a photo for their wedding Dec 1902, but not taken until 1903, as Grace is noticably with child. First child Eva was born Nov 1903. Family ledgend is that her grandparents did not want her to marry Art because of his Amish background. Possibly they had a change of heart and had the "wedding photo" taken after the fact.
Art & Grace possibly their 30th Anniversary
Art and Grace 50th Wedding Anniversary