# Bauer 2017: Unsolved! The History and Mystery of the World's Greatest Ciphers from Ancient Egypt to Online Secret Societies

> Craig P. Bauer, 2017. 6 records on Mysteries Department cite it. Source for Elgar's other cipher documents and the 1896 Pall Mall challenge.

Source: https://mysteriesdept.com/sources/SRC0CRZAHS00E5Y/unsolved-the-history-and-mystery-of-the-worlds-greatest  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Dorabella cipher](https://mysteriesdept.com/mysteries/dorabella-cipher)Bauer 2017

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# Unsolved! The History and Mystery of the World's Greatest Ciphers from Ancient Egypt to Online Secret Societies

Craig P. Bauer, 2017. _Princeton University Press (ISBN 978-0691167671)_.

Survey of unsolved ciphers with a chapter on Elgar, including the Liszt fragment, the exercise book and the Cryptogram card.

**Dorabella cipher** Bookdoi: **[10.1515/9781400884797](https://doi.org/10.1515/9781400884797)** Checked against the original0

## What it's used for here

Source for Elgar's other cipher documents and the 1896 Pall Mall challenge.

## Cited by on this site 6 records

[Crystal Palace concert programme with 18 semicircle symbols (the Liszt fragment)](https://mysteriesdept.com/mysteries/dorabella-cipher/artifacts/ART0CRZB0XC7YXW/crystal-palace-concert-programme-with-18-semicircle-symbols)

ART

[Elgar's exercise book with the semicircle alphabet and clock-face diagrams](https://mysteriesdept.com/mysteries/dorabella-cipher/artifacts/ART0CRZB1D045X5/elgars-exercise-book-with-the-semicircle-alphabet-and-clock)

ART

[The "Cryptogram" card from Elgar's working of the 1896 Pall Mall Magazine challenge](https://mysteriesdept.com/mysteries/dorabella-cipher/artifacts/ART0CRZB1WM1CCX/the-cryptogram-card-from-elgars-working-of-the-1896-pall)

ART

[Elgar works on a cipher challenge printed in the Pall Mall Magazine](https://mysteriesdept.com/mysteries/dorabella-cipher/events/EVT0CRZAP5M50Y7/elgar-works-on-a-cipher-challenge-printed-in-the-pall-mall)

EVT

[The Dorabella cipher](https://mysteriesdept.com/mysteries/dorabella-cipher)

The mystery article

MYS

[Do Elgar's notebook pages give the key to his semicircle alphabet?](https://mysteriesdept.com/mysteries/dorabella-cipher/questions/QST0CRZARKR73JN/do-elgars-notebook-pages-give-the-key-to-his-semicircle)

Question

QST

## Cite it

```
Bauer, C. P. (2017). Unsolved! The History and Mystery of the World's Greatest Ciphers from Ancient Egypt to Online Secret Societies. Princeton University Press (ISBN 978-0691167671). https://doi.org/10.1515/9781400884797
```

[Read it free at archive.org](https://archive.org/details/unsolvedhistorym0000baue)

Key

**SRC** 0CRZAHS00E5Y

Kind

Book

Rights

The publisher's

Kept

27 Oct 2026, for editors

Checked

Against the published original

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

[CSL-JSON](https://mysteriesdept.com/sources/SRC0CRZAHS00E5Y/unsolved-the-history-and-mystery-of-the-worlds-greatest/csl.json)