For my own amusement, and for future reference, I am listing my favorite kids books from board books on up to "chapter books." I am only going to list the really special ones, from my childhood and from reading to Zoe (this are marked with an asterick), so there will be many glaring omissions.
Board Books:
Goodnight Moon
Freight Train
Where's Spot*
Hippos Go Berserk
The Very Hungry Caterpillar
Brown Bear, Brown Bear, What Do You See?*
The Runaway Bunny
Picture Books:
Leo the Late Bloomer
The Snowy Day
Harry the Dirty Dog (and the other Harry books)
Where the Wild Things Are
In the Night Kitchen
Noah's Ark
The Little Engine That Could
The Frances books by Russell Hoban (Bedtime for Frances, A Bargain for Frances etc.)
Curious George
Caps for Sale
Millions of Cats
Time for Bed*
Rosemary Wells books: Noisy Nora, Timothy Goes to School, Morris's Disappearing Bag, Stanley and Rhoda
May I Bring a Friend?
Robert McCloskey books: Make Way for Ducklings, Blueberries for Sal, One Morning in Maine
Mike Mulligan and his Steam Shovel
I Can Read and early chapter books:
Father Fox's Penny Rhymes
Little Bear
Frog and Toad Are Friends
Amelia Bedelia
Eloise
Madeline
Pippi Longstocking
Winnie-the-Pooh
Charlotte's Web and Stuart Little
Mrs. Piggle-Wiggle
Mr. Popper's Penguins
Elementary School and Up:
Bridge to Terabithia
A Cricket in Times Square
The Little House Books
Harriet the Spy
The Borrowers
The Secret Garden and The Little Princess
The Island of the Blue Dolphins
D'aulaires Greek Myths
Little Women
From the Mixed-Up Files of Mrs. Basil E. Frankweiler
All-of-a-Kind Family