Ask HN: Book on the History of Flash on Web?

I remember last year here on HN I saw a book on the history of Adobe Flash on the web, I think it was regarding Flash web design and Flash games. I can not find it searching on the HN and it is not on the Amazon. I can recall it looked very artistic maybe it is only ebook but I can not find it. Does anybody know the book and can you link it to me?