On Saturday, former president Jimmy Carter turned 98.

Carter, the longest-serving president in US history, celebrated the milestone with his family.

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celebrated in Plains, Georgia, the town he was born in, in 1924, the year Calvin Coolidge was president.

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spouse Rosalynn, age 95. He went to a parade in Plains and sat in a wheelchair to watch.

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Carter could be seen grinning in a wheelchair watching the march in a photo shared by the Carter Center.

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