# Ajax Penumbra

Canonical: https://www.bookquiver.com/robin-sloan/ajax-penumbra/9781782395171

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![Ajax Penumbra](https://quivercdn.com/covers/atlantic-books/robin-sloan/ajax-penumbra_978-17-8239-517-1.jpg?v=2026-05-23%2007%3A13%3A43)

- Book: [Ajax Penumbra](https://www.bookquiver.com/robin-sloan/ajax-penumbra) ([Ajax Penumbra.md](https://www.bookquiver.com/robin-sloan/ajax-penumbra.md))
- Authors: [Robin Sloan](https://www.bookquiver.com/robin-sloan)
- Publisher: atlantic_books
- ISBN: 978-17-8239-517-1
- Published: 2014-06-05
- Language: en_GB
- Binding: Softcover

## Description

The utterly charming prequel to the New York Times -bestseller Mr Penumbra’s 24-hour Bookstore. San Francisco, 1969. The summer of drugs, music and a new age dawning. A young, earnest Ajax Penumbra has been given his first assignment as a Junior Acquisitions Officer – to find the single surviving copy of the Techne Tycheon , a mysterious volume that has brought and lost great fortune for anyone who has owned it. After a few weeks of rigorous hunting, Penumbra feels no closer to his goal than when he started. But late one night, after another day of dispiriting dead ends, he stumbles upon a 24-hour bookstore and the possibilities before him expand exponentially. With the help of his friend’s homemade computer, an ancient map, a sunken ship and the vast shelves of the 24-hour bookstore, Ajax Penumbra might just find what he’s seeking…