Encarta: Whitman, Walt: Encyclopedia article provides an overview of Whitman's life and work.
I Hear America Singing: Walt Whitman: An illustrated history of the poet's life complete with biography, timeline, selected works, and video clips. From PBS.
The Academy of American Poets: Walt Whitman: Detailed biography, selection of poems, and portrait.
The Walt Whitman Hypertext Archive: Includes detailed biographical essay, online texts, letters, and contemporary reviews of Whitman's works.
Walt Whitman: All American Writer: Student-written biography includes photographs of the poet and a sample of his writing.