The mission of this site is to tell the story of hundreds of people who worked at the United States Naval Computing Machine Laboratory, a top secret project in Dayton during World War Two. These people kept their secret for over fifty years.

Please take a look–there are hundreds of pages of declassified documents, rosters of personnel, photographs and more. I have added a new bibliography page brought up to date to include burgeoning information about cryptography on the web.

This site originates with and is maintained by Debbie Anderson in Dayton, Ohio. This site is an outgrowth of my own efforts to learn more about this story and a desire to share what I have learned. It also is a resource for documentation behind the documentary Dayton Codebreakers.

I am grateful to the Archive Center at Dayton History, the Wenger Command Display in Pensacola, Florida, friends at the NSA Cryptologic History Center and the National Cryptologic Museum, and the many veterans–WAVES and sailors– who have been so generous over the years for a share of the photographs presented here.

Thanks for learning about a part of Dayton’s, and the nation’s, history.

My Ten Most Frequently Asked Questions and an updated bibliographic page

After speaking to groups for over 25 years I’ve come to expect a few familiar questions. A few years ago I put them together for a presentation and now I’m using them as a beginner’s guide to the history of the Dayton Bombe Project. They can be found at 10 Most FAQs. A reading list is on the Notes and Sources page.

Stray thoughts


Something you entered
transcended parameters.
So much is unknown.


  • Change is good!

    New format and content are coming to this site. While this is growth there are certain to be problems--please be patient if sections disappear and content gets disjointed. It will all be good soon.

    Broadcast extended 2006-2018 (!) on American Public Television. DVD sales--

    DVDs of our documentary can be obtained in several ways:

    If you live in the Dayton area, DVDs are sold at the Museum Store at Carillon Historical Park, and at the book store at the Wright Dunbar Interpretive Center, West Third Street.
    News: the stock of DVDs at both Dayton History/Carillon Park and at Wright-Dunbar has been replenished.