Letters from John Lennon, Marilyn Monroe and Dwight Eisenhower are among hundreds of historical documents being offered in an online auction.
Monroe tells acting coach Lee Strasberg in a handwritten, undated letter that she cannot concentrate on what she is trying to learn. That note, written on Hotel Bel-Air letterhead stationery, is expected to fetch up to 50,000 dollars (£33,000).
A collection of 58 letters that Eisenhower wrote to his wife Mamie while he was the Allied commander during the Second World War could bring up to 120,000 dollars (£80,000).
And John Lennon's letter to Paul and Linda McCartney around the time of the Beatles' formal 1971 break-up could bring up to 60,000 dollars (£40,000).
They are among 250 items being auctioned on May 30 by documents dealer Profiles in History.