# Is "The Son of Neptune (Heroes of Olympus 2)" by Rick Riordan a First Edition?

> **Quick answer.** A first edition of The Son of Neptune (Heroes of Olympus 2) by Rick Riordan (Disney-Hyperion, 2011) is identified by: First printing of the US edition is identified by the full number line ending in 1 (10 9 8 7 6 5 4 3 2 1) on the copyright page, under the Disney-Hyperion imprint, dated 2011. US first edition (Disney-Hyperion, October 2011), the recognized first for this American author; the US edition is the standard collector reference over the near-simultaneous UK Puffin release.

**Checklist — a true first has these:**
- First printing of the US edition is identified by the full number line ending in 1 (10 9 8 7 6 5 4 3 2 1) on the copyright page, under the Disney-Hyperion imprint, dated 2011
- Publisher imprint reads Disney-Hyperion
- Not a book-club edition (see below)

| | |
|---|---|
| Author | Rick Riordan |
| Publisher | Disney-Hyperion |
| Year | 2011 |
| True first | US edition |
| Format | Children's / illustrated |
| Key point | First printing of the US edition is identified by the full number line ending in 1 (10 9… |
| Book-club edition exists? | — |

## Points of issue
First printing of the US edition is identified by the full number line ending in 1 (10 9 8 7 6 5 4 3 2 1) on the copyright page, under the Disney-Hyperion imprint, dated 2011.

## Is this the true first?
US first edition (Disney-Hyperion, October 2011), the recognized first for this American author; the US edition is the standard collector reference over the near-simultaneous UK Puffin release.

## Telling it from reprints & book-club editions
Later printings show a number line that no longer descends to 1.

## Source
New Mexico Literacy Project — Is *The Son of Neptune (Heroes of Olympus 2)* by Rick Riordan a first edition? https://newmexicoliteracyproject.org/first-edition/the-son-of-neptune-heroes-of-olympus-2
CC BY 4.0. Part of the Canonical First-Edition Points of Issue dataset (https://newmexicoliteracyproject.org/api/first-edition-titles.json). Last reviewed 2026-07-03.