It is surprising difficult to find a quality alphabet book with both upper and lower case letters. This is one!

Alfie and Bet are off on a quest to discover the letter they like the best … but they just can’t seem to agree!

With colorful characters, pop-ups on every page, a repeating panel with both upper and lowercase letters throughout and tons of alliterative enthusiasm, Maddie Frost’s Alfie and Bet's ABC is a pop-up alphabet adventure readers won’t soon forget! (And they’ll learn their letters, too!)

and with a "Zzzzz" to finish it makes for great bedtime reading too.
"Z is for zebra...wait...where are Alfie and Bet?
Surely their quest is not finished yet?
Zzzzz - well we can forgive them, it's been a long day...
I guess each letter's special in its own special way."

Reviews:
Amazing! My kids absolutely love this book! The story is fun, with a rhyming pattern, fun illustrations, the pop up letters are amazing. The whole book is done very well, one of the best ABC books we have seen. You don't feel like you are reading an ABC book, the story itself is so fun to read! Highly recommend, and my kids are obsessed!

Great way to learn ABC's I love being able to teach my children while at the same time reading a fun story and this book helps me accomplish both! The cute rhyming story is fun and silly and the pop ups and illustrations make it engaging and educational. Can't say enough about this book.