I did something similar using Caldecott Books with our third grade. Since there are so many titles we started by reading the books from the year the students were born, comparing them to the year their parents were born, then to the year that their grandparents were born.It was really a fun literacy unit. I also get parents asking me what books to give as a gifts I usually start with the Caldecott in the year the child was born.
I also do Caldecott Units with second grades and they are particularly enamored with the really old titles, like, Song of the Swallows, White Snow Bright Snow, Make Way for Ducklings, The Biggest Bear.
I do have most of the Caldecott's in our school collection.