"The Sixties, I suppose, were a different time. Hunting black people for sport had just been outlawed, women were finally guaranteed adequate grazing lands and Congress had officially declared war on trees. And science, having successfully burdened the heart and mind of every child with the knowledge of impending thermonuclear apocalypse, contentedly turned its attention to frogs and stuff. Their findings? Hawks may not be as evil as we thought."
— My pal Matt Louv has begun a blog about the 1964 Audubon Nature Encyclopedia. It is already excellent and worthy of your attention.