Martin Bormann, who was serving as Hitler's private secretary, persuaded Hitler to allow a team of specially picked officers to record in shorthand his private conversations for posterity.[1] The first notes were taken by the lawyer Heinrich Heim, starting from 5 July 1941 to mid-March 1942.[1] Taking his place, Henry Picker took notes from 21 March 1942 until 2 August 1942,[6] after which Heinrich Heim and Martin Bormann continued appending material off and on until 1944.