Brain Snacks: Tasty Tidbits of Knowledge
Crane had to publish Maggie using his own money because publishers thought it was too much of a bummer. Good thing he wasn't born a tenement dweller, or else he'd never have had the funds. (Source.)
Crane was a huge Civil War buff, and even went to military school. (Source.)
Crane had to tone down the violence in Maggie for the second edition because readers just couldn't cope. (Source.)