This poster advertised the book ‘Carter Beats the Devil’ by Glen David Gold. The book was published by Hodder and Stoughton in Great Britain in 2001.
This joke optical illusion card is Copyright 2001 James Dalgety. It came into the collection as part of the Grand Illusions (www.grand-illusions.com) Christmas Pack 2018/2019. James based it, with permission, on a much earlier card that he saw when he visited the Davenport Collection. Should you follow the instructions on the card, you won’t see a nodding donkey, but people watching you will see one.