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First-Edition Identification · Jack Williamson

Is My Darker Than You Think a First Edition?

Fantasy Press, 1948 · Hardcover (trade)

Last reviewed 4 July 2026 · CC BY 4.0

Quick answer

A first edition of Darker Than You Think by Jack Williamson (Fantasy Press, 1948) is identified by: First book edition: Fantasy Press, Reading, Pennsylvania, 1948. US original and the true first book edition; the census claim is correct.

Checklist — a true first has these:

AuthorJack Williamson
PublisherFantasy Press
Year1948
True firstUS edition
FormatHardcover (trade)
Key pointFirst book edition: Fantasy Press, Reading, Pennsylvania, 1948. "First Edition" is stated on the copyright page with no further printing…
Book-club edition exists?No

The points of issue

Decode the printer’s key: paste the number line into the decoder · Fantasy Press first-edition guide.

How Fantasy Press marked a first edition

Full Fantasy Press first-edition guide →

How to verify your copy, step by step

  1. Find the copyright page — the verso (back) of the title page.
  2. Confirm the first-edition statement — look for “First Edition,” “First Printing,” or the publisher’s equivalent wording.
  3. Check for a number line or dated printing — the lowest number present is the printing; a dated first printing with no later printings listed is the tell.
  4. Verify this is the US true first — not a later-market or reprint edition.
  5. Rule out a book-club edition — a blind-stamp on the rear board or a jacket with no printed price marks a book-club copy.
  6. Photograph four things — the front cover, spine, title page, and copyright page — the standard record for identification.

The dust jacket

For a collectible first edition the dust jacket matters as much as the book. Confirm the jacket is present and unclipped — the printed price should still be at the corner of the flap (a clipped corner or a price-less flap can indicate a book-club issue). First-state jackets can differ from later ones in the cover art, blurbs, or review quotations; where a specific first-state jacket point is known for this title it is noted above.

Binding & format

Where multiple bindings exist, the hardcover trade issue is usually (but not always) the precedence copy — confirm against the points above. Later printings often show cheaper cloth, thinner boards, or simplified spine stamping. A simultaneous signed or limited issue, when one exists, is a distinct state from the trade first.

Is this the true first?

US original and the true first book edition; the census claim is correct. It expands the novella of the same title from Unknown (December 1940) to novel length, so the magazine text is the only prior appearance and is not a book edition. No earlier or competing British edition is documented in the sources consulted — first British publication is later — so there is no UK-vs-US precedence question. New Mexico author (Portales).

Telling it from reprints & book-club editions

No contemporaneous book-club issue is documented in the sources consulted. The governing reprint tell is the Fantasy Press imprint itself: Quill & Brush records that the publisher's "First Edition" statement was sometimes left standing on offset reprints issued under other publishers' imprints, so a "First Edition" line means nothing unless the spine, title page and jacket all read Fantasy Press, Reading, Pennsylvania, 1948. Later paperback and trade reissues carry their own imprints and are readily distinguished.

Frequently asked questions

Is my copy of Darker Than You Think a first edition?

A first edition of Darker Than You Think by Jack Williamson (Fantasy Press) is identified by: First book edition: Fantasy Press, Reading, Pennsylvania, 1948.

How do I tell the first printing from a later one?

Check the copyright page. A stated first edition, a number line ending in 1, or a dated first printing with no later printings listed is the key. US original and the true first book edition; the census claim is correct.

Is the book-club edition the same as the first?

No contemporaneous book-club issue is documented in the sources consulted. The governing reprint tell is the Fantasy Press imprint itself: Quill & Brush records that the publisher's "First Edition" statement was sometimes left standing on offset reprints issued under other publishers' imprints, so a "First Edition" line means nothing unless the spine, title page and jacket all read Fantasy Press, Reading, Pennsylvania, 1948. Later paperback and trade reissues carry their own imprints and are rea

I have a first edition of Darker Than You Think — what should I do?

First, document the copy: photograph the copyright page (the number line and any edition statement) and the dust-jacket flap — an unclipped, priced jacket matters. Confirm the points of issue above against your copy, and use the free First Edition Checker to decode the printing. To sell, the author’s collecting guide covers the market. And if you are clearing books in the Albuquerque area, the New Mexico Literacy Project offers free pickup, any condition, and makes sure collectible copies are identified rather than discarded.

Glossary

First edition
Every copy printed from the first setting of type. Collectors usually want the first edition, first printing (the true first).
First printing / impression
A single press run from that setting. The first printing is the earliest and most desirable; later printings are still the first edition but not the true first.
Number line (printer's key)
A row of numbers on the copyright page (e.g. 10 9 8 7 6 5 4 3 2 1). The lowest number present is the printing — a line including 1 marks a first printing (Random House deliberately ends at 2).
Points of issue
Specific physical details — a stated edition, a number line, a typo, a jacket state — that identify the true first printing.
Book-club edition (BCE)
A reprint made for a book club. Tells include a blind-stamped dot or square on the rear board and a dust jacket with no printed price. Not the true first.
First thus
The first appearance of a particular version (first paperback, first illustrated, first U.S. printing) — a first of that kind, not the first edition of the work.

Related first editions

How to cite this page

New Mexico Literacy Project. “Is Darker Than You Think by Jack Williamson a First Edition? Points of Issue.” NMLP First-Edition Identification Reference. Reviewed 4 July 2026. Retrieved from https://newmexicoliteracyproject.org/first-edition/darker-than-you-think. Licensed CC BY 4.0 — part of the open Canonical First-Edition Points of Issue dataset (DOI 10.5281/zenodo.21184548).

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