"The Enigma and M-209 were acquired as a long-term loan from the National Cryptologic Museum on 28 August 2004 and, since 30 September 2004, have been integrated into the museum's communications equipment exhibit."@en . "The Enigma and M-209 were acquired as a long-term loan from the National Cryptologic Museum on 28 August 2004 and, since 30 September 2004, have been integrated into the museum's communications equipment exhibit."@en . "National Museum of Military History"@en . .