Another good books to suggest are books written by Harry Lorayne[0]. You could also see his demonstrations in youtube. His books were published long before Moonwalking with Einstein, most of them are similar to Lorayne's system and I would recommend it for those who want to improve and train further on memorizing things.

Also for those who want a book that demonstrates the use of creating a memory palace, I would recommend The Memory Palace - Learn Anything and Everything[1]. You'll just learn the 37 plays of Shakespeare wherein almost of the descriptions were funny.

I also listen to a free audiobook Memory: How to Develop, Train and Use It by William Walker Atkinson[2].

[0] - https://en.wikipedia.org/wiki/Harry_Lorayne

[1] - https://www.amazon.com/Memory-Palace-Anything-Everything-Sha...

[2] - https://librivox.org/memory-how-to-develop-train-and-use-it-...