Once I was a Cardboard Box, Now I'm a Book About Polar Bears: 10/09/11
I've read a handful of metafiction but I think Once I was a Cardboard Box, Now I'm a Book About Polar Bears by Anton Poitier is the first meta-nonfiction I've read. It is exactly about what the title says it is.
The book is a picture book with parallel information running in two columns. The first column which takes up two thirds of the page contains facts about polar bears and how the melting arctic ice is impacting their survival. The remaining third of the page goes through the timeline of recycling a box and printing a book.
The book itself has no plastic and unbleached paper pages, meaning they are a light brown. It's nice to see that the book is what it claims.
My son recommended the book to me.