Illustration by JVL in Through the Looking Glass and What Alice Found There,
Artists' Choice editions, 2011
The illustration depicts a diagram of Alice Liddell's days of receiving 'unbirthday' presents. You'll see one blank (white) square when she doesn't receive an 'unbirthday' present because that is when it was her actual birthday. Humpty Dumpty was very proud to have received a cravat as an 'unbirthday' present from the White King and Queen, suggesting to Alice that you can receive 364 'unbirthday' presents rather than only one single birthday present.