First, vitamin D is crucial to healthy kids (and adults), especially people with darker skin tones. See this article for more information.
Second, if you have a little brown girl, let her watch this Sesame Street video on YouTube called "I Love My Hair." It's adorable!
Third, check out my daughter's currently favorite book entitled More More More given to us on her first birthday by a lovely (and large) transracial family. Breaks my heart every time I read it!
Finally, check out this NY Times article on sharing a child's life story.
Happy reading (and viewing)!