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A photo of former U.S. President with his children John Jr. and Caroline in costumes taken on Oct. 31, 1963 is displayed among other items as part of the McInnis Auctioneers Presidential Auction in Amesbury, Mass. Feb. 10, 2013.

The items to be auctioned are part of the estate of David F. Powers, who was a close friend as well as Special Assistant to former President John F. Kennedy. Powers traveled with Kennedy from the beginning of his political career through the president's assassination in 1963. Powers became the first curator of the JFK Library, where he served until he retired from the position in 1994. Powers' family discovered the pieces as they prepared the family home for sale.

See the auction catalogue presented by John McInnis Auctioneers.

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A letter to former U.S. President John F. Kennedy from his mother

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Photos of Jacqueline Kennedy Onassis taken in 1955

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Photos of former U.S. President John F. Kennedy and his wife Jacqueline Kennedy Onassis