Pseudonym the attempt was not entirely successful – and the two are still sometimes confused by booksellers. A pen name may be used specifically to hide the identity of the author, as in the case of exposé books about espionage or crime, or explicit erotic fiction. Some prolific authors adopt a pseudonym to disguise the extent of their published output, e.g. Stephen King writing as Richard Bachman. Co-authors may choose to publish under a collective pseudonym, e.g., P. J. Tracy and Perri O'Shaughnessy. Frederic Dannay and Manfred Lee used the name Ellery Queen as both a pen name for their collaborative
PEN America that would transcend national and ethnic divides in the wake of World War I. PEN America subscribes to the principles outlined in the PEN International Charter. The organization’s name was initially conceived as an acronym: Poets, Essayists, Novelists (later broadened to Poets, Playwrights, Editors, Essayists, Novelists). As membership expanded to include a more diverse range of people involved in literature and freedom of expression, the name ceased to be an acronym. Full membership in PEN America generally requires being a published writer with at least one work professionally published, or being a translator, agent, editor, or other publishing professional. There