Short Story, published 1943
Ten-year-old Princess Lenore, the apple of her father's eye, has fallen sick of a surfeit of raspberry tarts, and the King, anxious for her recovery, promises whatever her heart desires. If she can have the moon, she replies, she will get better. The King is used to relying on his advisors, so he sends, in succession, for the Lord High Chamberlain, the Royal Wizard and the Royal Mathematician, to no avail. By this time sounding distinctly miffed, he sends again, this time for the Court Jester who, wiser than the others, finds a solution. All seems well until the King realises that the moon will rise again the next night, so he sends for...well, you can guess.