# Is "Invaders from Earth" by Robert Silverberg a First Edition?

> **Quick answer.** A first edition of Invaders from Earth by Robert Silverberg (Ace, 1958) is identified by: Ace Double D-286 paperback original, bound dos-a-dos with Across Time by David Grinnell (pseudonym of Donald A. US Ace Double paperback original is the true first book appearance.

**Checklist — a true first has these:**
- Ace Double D-286 paperback original, bound dos-a-dos with Across Time by David Grinnell (pseudonym of Donald A. Wollheim)
- Emsh cover art
- Expanded from We, the Marauders (Science Fiction Quarterly, February 1958)
- Publisher imprint reads Ace
- Not a book-club edition (see below)

| | |
|---|---|
| Author | Robert Silverberg |
| Publisher | Ace |
| Year | 1958 |
| True first | US edition |
| Format | Hardcover (trade) |
| Key point | Ace Double D-286 paperback original, bound dos-a-dos with Across Time by David Grinnell (pseudonym of Donald A. Wollheim) |
| Book-club edition exists? | No |

## Points of issue
Ace Double D-286 paperback original, bound dos-a-dos with Across Time by David Grinnell (pseudonym of Donald A. Wollheim). Emsh cover art. Expanded from We, the Marauders (Science Fiction Quarterly, February 1958).

## Is this the true first?
US Ace Double paperback original is the true first book appearance.

## Telling it from reprints & book-club editions
No book club edition.

## Source
New Mexico Literacy Project — Is *Invaders from Earth* by Robert Silverberg a first edition? https://newmexicoliteracyproject.org/first-edition/invaders-from-earth
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.