Sierra Club Books is the publishing division of the Sierra Club, founded in 1960 by then Sierra Club President David Brower. Volumes intended for club members had been published prior to 1960. In addition, books under their name had been published before 1960, but done through already established publishers, as was the case with This Is Dinosaur, published by Alfred A. Knopf. Their first in-house book, volume 1 in the Exhibit Format series, was This is the American Earth, published in 1960.