NMLP P-027808 · True-first precedence · minted 2026-07-04

Downward to the Earth

Robert Silverberg · Nelson Doubleday (Science Fiction Book Club) · 1970

No separate Doubleday trade hardcover was issued; the first US hardcover appearance was the Nelson Doubleday / Science Fiction Book Club edition. The novel was serialized in Galaxy (November 1969 to March 1970) before book publication.

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New Mexico Literacy Project — True-first precedence NMLP P-027808 for "Downward to the Earth" by Robert Silverberg (https://newmexicoliteracyproject.org/id/point/p-027808, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).