Treasures of The New York Public Library
Start off National Poetry Month right by checking out Walt Whitman's "Blue Book" on the Library's Treasures of The New York Public Library page. The "Blue Book" is Walt Whitman's hand edited copy of the 1860 edition of Leaves of Grass. The entire book is available online through the Library's Digital Gallery. When you're done, check out Gary Schmidgall's classic study of the role of homoeroticism in Whitman's work Walt Whitman: A Gay Life.