<p>With the first publication of "Leaves of Grass" in 1855, Walt Whitman was solidified as an American poet of undeniable importance. The poems contained in that slim volume candidly spoke of politics, slavery, sexuality, consciousness, and the spiritual world. His content was as radical as his form; he utilized free verse unlike anyone before, creating a poetic tongue that was unique and personal yet universal and cosmic. Born in New York in 181...