A maternity dress Jacqueline Kennedy wore when she was pregnant, along with a series of photos from the White House, are to auction at Nate D Sanders.
The lot is valued in excess of $10,000, with bidding due to close later today.
Jacqueline gave the mementos to the former nanny of her children Maude Shaw, whom she visited in London during the 1960s.
A copy of Shaw's memoir, White House Nanny: My Years with Caroline and John Kennedy Jr., is included.
Shaw has inscribed it: "To Rose / With happy memories of our long friendship / My very best wishes for you".
The book includes an account of Shaw receiving the dress and other items.
In recent years, candid photographs of the Kennedys have sold well at auction - with a set showing a family holiday in Cape Cod making $32,500 earlier this year.
The sale also features a stocking presented by Ronald Reagan to a terminally ill child in 1983.
Please sign up to our free newsletter to receive exciting news about memorabilia auctions.