As only the second state visit by a US President during Her Majesty's reign, the Obamas' trip to Britain is an important occasion.
And those involved marked the event with the exchanging of gifts, which included jewellery, pony bits and a jar of honey.
The two heads of state, and their spouses, offered each other specially bound books, with Barack Obama receiving facsimiles of Royal Archive letters sent between Queen Victoria and a succession of American presidents.
The documents were bound in red leather with gold lettering and displayed in a presentation box.
The Queen received a handmade leather bound album containing rare memorabilia and photographs that chronologically highlight the trip of her parents to America in 1939, the first by a reigning British monarch.
Michelle was given an antique gold and red coral brooch in the form of roses, presented in a jewel box covered in the same red leather as her husband's book.
The Prince of Wales and Duchess of Cornwall were offered plants, seedlings and seeds from the South Lawn of the White House and jars of honey from the White House beehive.
And newlyweds Duke and Duchess of Cambridge received laptop computers from the Obamas as wedding gifts.
These have gone to the Northern Ireland branch of PeacePlayers international which uses basketball to bring children from opposing communities together.