How to Identify a Dell (Mapbacks / paperback originals) First Edition

How to identify a first printing

• Dell-number identification: every Dell paperback carried a sequential Dell number. Mapbacks run roughly #5 to ~#550 (books #1-4 had no map). The Dell number plus the back-cover map/keyhole-eye logo establishes the series and approximate date.
• First printing of a given Dell number is identified by the absence of any reprint/printing notice on the copyright page and a price matching the era; many Dell mapbacks are effectively single-printing, so the issue point is the Dell number itself.
• Back cover bears a pictorial 'map' (or chart/blueprint) of the scene of the crime, with a front-cover banner sometimes reading 'with crime map on back cover'; 'eye-in-keyhole' logo on the front.
• Dell First Editions (from 1953, prefix 'A###' / 'First Edition' line) are paperback ORIGINALS — the paperback IS the first edition; look for the 'Dell First Edition' designation.

Notable points & cautions

• Mapbacks (1943-1951): the back-cover map (many by illustrator Ruth Belew) is the defining feature; maps faded out by 1951.
• A 'Dell First Edition' (post-1953) is a true first printing of an original work and has no prior hardcover — distinct from Dell mapback REPRINTS of hardcover novels (e.g., Christie titles originally from Dodd, Mead), which are reprints, not firsts.
• Condition-sensitive: spine, map clarity, and cover gloss drive value; price on cover helps date.
• Do not confuse with later glue-bound Dell reprints that reused numbers/series names.

Imprints

First editions also appear under: Dell Books, Dell Mapbacks (1943-1951), Dell First Edition (paperback originals, 1953+), Dell Great Mystery Library. Each generally follows the house convention above.

Frequently asked questions

How do I know if my Dell (Mapbacks / paperback originals) book is a first edition?

Check the copyright page. Dell-number identification: every Dell paperback carried a sequential Dell number. Mapbacks run roughly #5 to ~#550 (books #1-4 had no map). The Dell number plus the back-cover map/keyhole-eye logo establishes the series and approximate date. First printing of a given Dell number is identified by the absence of any reprint/printing notice on the copyright page and a price matching the era; many Dell mapbacks are effectively single-printing, so the issue point is the Dell number itself.

Does Dell (Mapbacks / paperback originals) use a number line?

First printing of a given Dell number is identified by the absence of any reprint/printing notice on the copyright page and a price matching the era; many Dell mapbacks are effectively single-printing, so the issue point is the Dell number itself.

Is a book-club edition a Dell (Mapbacks / paperback originals) first edition?

No. Book-club editions reprint the text but are not the true first edition. Mapbacks (1943-1951): the back-cover map (many by illustrator Ruth Belew) is the defining feature; maps faded out by 1951.

What era does this cover?

This covers Dell (Mapbacks / paperback originals) (1943-1960s). Conventions changed over time, so confirm the era of your copy.