 Klass has combined her interest in medicine and literacy to help promote the importance of books to children, through her work with Reach Out and Read.She became involved with Reach Out and Read when it was a single program in a single hospital, and, through her leadership at the National Center, has helped it grow into a national program, now in more than 4,500 locations in all 50 states, distributing more than 6 million books every year to more than 3.8 million children.Klass has trained doctors and nurses around the United States and elsewhere, including Portugal and the Philippines, in strategies to incorporate books and literacy guidance into pediatric primary care.