Will they have a book to make her feel normal?

I was reading a post on a forum I go to from time to time. They were talking about how the new statistic for births in the US is that 4 out of 10 babies are born to parents who are not married to each other. That is an all time high.

That got me thinking about how many times, when an unconventional lifestyle starts to gain popularity, childrens books come out about the topic to make kids feel more "normal". This led me to ponder; how many kids in the US are not only born to married parents, but the mom and dad of said child, both have intact birth parents? Making this child only have one set of parents and only two sets of grandparents...no steps. Eowyn, actually has intact couples as far back as anyone alive can recall... I think by the time she's of school age, she may need a book...