Every parent knows the frustration of trying to satisfy the demands of an infant too young to communicate his or her thoughts. Now, a growing consensus of researchers agree that not only deaf children but also hearing children can benefit from early exposure to sign language, often learning such basic signs as milk, mother, and change as early as seven months. With this knowledge in mind, Kim Votry and Curt Waller have written and illustrated "Baby s First Signs" and "More Baby s First Signs," two books designed to provide your infant with the means to articulate his or her fundamental...