Welcome to the National Cryptologic Museum Foundation. The NCMF directly supports the National Cryptologic Museum (NCM), the first public museum in the U.S. Intelligence Community.

  • ...The nation’s brightest young minds to consider careers in STEM and cyber related fields

  • ...Robust dialog with the American public on cyber policy, technology, and privacy

  • ...Those who “served in silence” with valor and distinction, especially those who gave their lives in service

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Polish mathematicians & code breakers made the first breakthroughs against Nazi Germany's Enigma code.......

1930: Frank Rowlett Goes to Work for William Friedman

Thursday, April 1, 2021
1930: Frank Rowlett Goes to Work for William Friedman

1 April 1930: Frank Rowlett reports to work for William Friedman. Rowlett was inducted into the NSA/CSS Cryptologic Hall of Honor in 1999 - read the full entry about his career and accomplishments via the link at the end of the page.

Rowlett & Friedman both appear in this circa 1935 photo with other members of the U.S. Army's Signals Intelligence Service - the first SIS cryptanalysts. The initial four were William Friedman, Frank Rowlett, Abraham Sinkov, and Solomon Kullback. The original members of SIS were a unique quartet, men who ought to be national heroes. Their love was as much for the process as the result, the cryptanalysis as the intelligence derived from it, but what they did, the breakthroughs against the high-level code and cipher systems of our principal enemies, surely shortened the period of war by many months and resulted in the saving of thousands of American and British lives.

Rowlett & his colleagues solved the Japanese RED system and Rowlett played a significant role in solving the more sophisticated PURPLE. Rowlett & Friedman went on to help design the SIGABA machine with the U.S. Navy. Because of his importance in the protection of American communications, the NSA's Information Assurance organization has named its highest award the Frank Byron Rowlett Award.

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On This Day In History


  • SIS began receiving messages from Purple - a Japanese Cipher machine. Learn more about the "Magic of Purple"......

About Us

The NCMF directly supports the National Cryptologic Museum (NCM), the first public museum in the U.S. Intelligence Community. We think you will agree it is truly a "museum like no other."

Located adjacent to the National Security Agency (NSA) in Maryland, the NCM houses a priceless collection of artifacts that represent our Nation's history in code making and code breaking, as well as a world class library of cryptologic media. The NCMF acquires the best artifacts for the NCM and supports new educational and interactive exhibits.

The NCMF provides exceptional cryptologic programs throughout the year, encourages young minds to explore cryptology and innovation through valued awards, and hosts educational, cryptology-related exhibits at various community events.

As part of the Foundation's partnership with NSA to build the Cyber Center for Education and Innovation - Home of the National Cryptologic Museum (CCEI-NCM), the NCMF also serves as a leader in the field of cybersecurity - striving to provide the best in educational resources and programs.

The NCMF and NCM share a joint three-fold mission to Educate, Stimulate, and Commemorate. Learn more about our MISSION.