I adore and collect alphabet books, AND I am a librarian, so when I say this one is a stand out great alphabet, I do not take it lightly! Every children's collection should have a copy.
The pages have very simple rhyme, with a not very strict meter, so as far as poetry, it's not a perfect example. But the lines are easy to understand for even very young readers, and they convey just the right information in a very small number of words. And the letter X is for Xerox, which actually starts with X! I am always a little disappointed when X ends up being for eXcitement or the like.
And the illustrations are adorable! Each page builds upon the illustrations of the last, adding characters to fill the library with life and wit. Everything about this book works in its favor!