G. R. Carpenter's Walt Whitman.

Platt's Walt Whitman. (Beacon Biographies)

Noyes's An Approach to Walt Whitman. (Excellent.)

Bucke's Walt Whitman. (A biography by one of his executors.)

In Re Walt Whitman, edited by his literary executors. (Supplements Bucke.)

Burroughs's Whitman: A Study.

Symonds's Walt Whitman: A Study.

Dowden's The Poetry of Democracy, in Studies in Literature.

Stevenson's Familiar Studies of Men and Books. (Whitman.)

Whitman's Works, edited by Triggs. (Putnam Subscription Edition.) Vol. X. contains a bibliography and reference list of 98 pp.