The purpose of this essay is to examine the sources and presentments of Olson's ecological values. In the first place, we will identify the principal concepts informing these values. The texts for this discussion will be Olson's major prose writings and geographer Carl Sauer's "The Morphology of Landscape,'' which, we will see, exerted a. major influence on Olson, in this context. Second, we will show how Olson embodied and presented these values in his most famous poetic work, The Maximus Poems.