This 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.

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.

  • May 8th: VE Day!

    A joy-filled day for our country in 1945. From wikipedia:

    Upon the defeat of Germany, celebrations erupted throughout the world. From Moscow to Los Angeles, people celebrated. In the United Kingdom, more than one million people celebrated in the streets to mark the end of the European part of the war. In London, crowds massed in Trafalgar Square and up the Mall to Buckingham Palace, where King George VI and Queen Elizabeth, accompanied by Prime Minister Winston Churchill, appeared on the balcony of the palace before the cheering crowds...

    In the United States, the victory happened on President Harry Truman's 61st birthday. He dedicated the victory to the memory of his predecessor, Franklin D. Roosevelt, who had died of a cerebral hemorrhage less than a month earlier, on 12 April.

    Massive celebrations also took place in Chicago, Los Angeles, Miami and especially in New York's Times Square.


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

    Many have written requesting our DVD--they are available, shipped from Dayton Ohio. In the Dayton area they can be found at these places.

    Please go to our DVD page to find out more!


    Have you seen the movie and want to find out more about Alan Turing's visit to Dayton?

    Since the debut of this movie I've fielded at least 5 inquiries a week. It's been rewarding to know that many folks around the country want to learn more about codebreaking in WW2.


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