First published by the Jargon Society in 1958, Letters announces the major phase of Robert Duncan's writing. Though long unavailable, it stands as a foundational book of postmodern poetry, setting "self-creation and self-consciousness in constant interplay" (in the author's own words).

Edited by Robert J. Bertholf, this new edition includes an afterword as well as a series of memos from Duncan to the typesetter Claude Fredericks. Also included are Duncan's original illustrations for the book.