# Is "Longitude — deeper Sobel: Galileo's Daughter" by Dava Sobel a First Edition?

> **Quick answer.** A first edition of Longitude — deeper Sobel: Galileo's Daughter by Dava Sobel (Walker & Company, 1999) is identified by: Walker hardcover, ISBN 0-8027-1343-2. US Walker is the true first, preceding the UK (Fourth Estate) edition.

**Checklist — a true first has these:**
- Walker hardcover, ISBN 0-8027-1343-2
- Walker trade editions of this era are identified by the absence of any later-printing statement, typically together with a number line ending in 1 on the copyright page; later printings add a higher printing statement or advance the number line
- First-issue jacket carries the printed price
- Publisher imprint reads Walker & Company
- Not a book-club edition (see below)

| | |
|---|---|
| Author | Dava Sobel |
| Publisher | Walker & Company |
| Year | 1999 |
| True first | US edition |
| Format | Hardcover (trade) |
| Key point | Walker hardcover, ISBN 0-8027-1343-2 |
| Book-club edition exists? | No |

## Points of issue
Walker hardcover, ISBN 0-8027-1343-2. Walker trade editions of this era are identified by the absence of any later-printing statement, typically together with a number line ending in 1 on the copyright page; later printings add a higher printing statement or advance the number line. First-issue jacket carries the printed price.

## Is this the true first?
US Walker is the true first, preceding the UK (Fourth Estate) edition. Distinct from Longitude (Walker, 1995), which is already cataloged.

## Telling it from reprints & book-club editions
No book-club issue of note; confusion is with later Walker printings. A number line ending in 1 (or no later-printing statement) plus the printed-price jacket identifies the first.

## Source
New Mexico Literacy Project — Is *Longitude — deeper Sobel: Galileo's Daughter* by Dava Sobel a first edition? https://newmexicoliteracyproject.org/first-edition/longitude-deeper-sobel-galileos-daughter
CC BY 4.0. Part of the Canonical First-Edition Points of Issue dataset (https://newmexicoliteracyproject.org/api/first-edition-titles.json). Last reviewed 2026-07-04.