The Pen that Pa Built by David Edwards, illustrated by Ashley Wolff.

This traditional cumulative story tells the process of making a woolen blanket from sheep to the final product.  The wording is wonderfully clear and concise, making reading it aloud a pleasure even to the end.  The illustrations echo back to traditional woodcuts but are enlivened by bright colors.  This is a pleasant glimpse into prairie life and the process of welcoming a new baby into the family. 

Unlike many more cut and dry books on the process of making something, the illustrations and language here add real life to the book.  Recommended for reading aloud to ages 4-6.