To read an essay on the poetry of Marsden Hartley, "On the Outside Looking In: The Poetry of Marsden Hartley" by Douglas Messerli, go here:
http://hyperallergic.com/269667/on-the-outside-looking-in-mardsen-hartleys-poetry/
http://hyperallergic.com/269667/on-the-outside-looking-in-mardsen-hartleys-poetry/