The 1922 book by a White Army general, Mikhail Diterikhs, "The Murder of the Tsar's Family and members of the House of Romanov in the Urals," sought to portray the murder of the royal family as a Jewish plot against Russia. It referred to Sverdlov by his Jewish nickname "Yankel" and to Goloshchekin as "Isaac". This book in turn was based on an account by one Nikolai Sokolov, special investigator for the Omsk regional court, whom Diterikhs assigned with the task of investigating the disappearance of the Romanovs while serving as regional governor under the White regime during the Russian Civil War. The investigating magistrate in Ekaterinburg in 1918 saw the signed telegraphic instructions to execute the Imperial Family came from Sverdlov. These details were published in 1966.