Crane, Stephen, The Selected Poems of Stephen Crane, Knopf, 1930.

This collection contains poems from The Black Riders and Other Lines, War is Kind and Other Lines, and Three Poems.

Hoffman, Daniel G., The Poetry of Stephen Crane, Columbia University Press, 1957.

Hoffman's study of Crane's poetry remains the best such study done to date.

Wertheim, Stanley and Paul Sorrentino, eds.,The Correspondence of Stephen Crane, Columbia University Press, 1988.

Sorrentino and Wertheim correct previous errors made in reporting Crane's letters and illuminate the personality of Crane. This collection is indispensable reading for those interested in Crane's life.