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.

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

1806: Aaron Burr’s “Cipher Letter” to General Wilkinson, leading to charges of treason against Burr.

Monday, July 29, 2019
1806: Aaron Burr’s “Cipher Letter” to General Wilkinson, leading to charges of treason against Burr.

29 July 1806: Aaron Burr’s “Cipher Letter” to General Wilkinson......led to charges of treason against Burr. The Letter was part of the "Burr Conspiracy" -- Aaron Burr's attempt to detach the Western states and the Louisiana Territory from the Union. Pictured here is a portion of the cipher key used in the Letter from Burr to Wilkinson.

Summary: Burr sent a letter in cipher to General Wilkinson in New Orleans announcing he had “commenced the enterprise” and that “detachments from different points and under different pretences will rendezvous on the Ohio” River on November 1. Burr wrote that the troops (pioneer settlers) would be at Natchez in early December to meet Wilkinson. “The gods invite to glory and fortune,” Burr says. Wilkinson eliminates the beginning portion of the letter when he presents it as evidence later, and is caught doing so by Burr.

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  • Robert Lamphere, FBI, began collaboration with cryptanalyst Meredith Gardner on VENONA-related material. The two worked closely together and were able to catch several Soviet spies.

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.