Nursery Rhymes
While no nursery rhyme books have won Caldecott Awards in the last 60 years, from 1938 to 1964 there were a number of fine books bestowed with awards.
Maud Petersham
Abecedaria, Part 1
Traditionally, alphabet books, or abecedaria, serve as beginning literacy instruction for babies and young children to promote letter, sound, and word development. But, greater potential than instruction exists in this form of picture books.