While I appreciate and admire the illustrations done for "Alice's Adventures" and "...Looking Glass" by John Tenniel, they have always struck me as a bit severe, dark and dense for a modern kid reader. The beauty of "The Wonderland Alphabet" is that the illustrations retain the formal look, style and elegant presence of Tenniel's illustrations, while managing to be a bit brighter, cheerier, sillier and more accessible. I don't necessarily see every child being "delighted" by Tenniel, but I can see a youngster being enchanted by some of the drawings in this book.
Further, while familiarity with the entire Alice world is certainly a plus in understanding and appreciating all of the alphabet entries, that's not essential to enjoying the book. Even if you don't really remember the Knave of Hearts, his entry, (under "K", which is an interesting choice for an alphabet book), is still amusing and engagingly drawn.
So, while this might be a bit of a challenge as an actual alphabet book, it is definitely a very attractive illustrated story book, and would be a great companion for an Alice book.
Please note that I received a free electronic copy of this book from the publisher in exchange for a frank review.