Despite past differences between Kahn and the National Security Agency over the information in "The Codebreakers", Kahn was selected in 1995 to become NSA's scholar-in-residence. On October 26, 2010, Kahn attended a ceremony at NSA's National Cryptologic Museum (NCM) to commemorate his donation of his lifetime collection of cryptologic books, memorabilia, and artifacts to the museum and its library. The collection is housed at the NCM library and is non-circulating (that is, items cannot be checked out or loaned out), but photocopying and photography of items in the collection are allowed.