William F Friedman Letter: To Professor Saunders Maclane, Talks About The Professor Changing The Dates He Wishes To Visit The Agency Til After The First Of The Year William F. Friedman
William F. Friedman Letter: To Professor Saunders Maclane, Acknowledging Prof Maclane's Inability To Attend Panel Meetings Of 20-21 May William F. Friedman
William F Friedman Letter To Professor Saunders Maclane Welcoming Him As A Member Of The National Security Agency Scientific Advisory Board And Inviting For A 2 Day Visit William F. Friedman