In medical abbreviations, PRN stands for "pro re nata" or "when necessary." In my article for The Differential this week, I review the practice of giving one book to each kid at every well-child check between the ages of 6 months to 5 years. I learned about this strategy to increase literacy and the love of literature at Seattle's own Odessa Brown Children's Clinic when I rotated there last October for my pediatrics clerkship. Go on over to my article to read more.
Then come back here and pick out your own title from the book pharmacy.
The one about Ceasar Chavez is good. So is Goodnight Moon.