The second edition of the scientific directory-calendar of memorable dates "History of the Russian Police" was prepared taking into account the comments and suggestions received as reviews for the first edition. All units of the central office of the Ministry of Internal Affairs of Russia, the Ministry of Internal Affairs for the republics, the main departments and departments of the Ministry of Internal Affairs of Russia for the constituent entities of the Russian Federation, transport departments for federal districts, educational and scientific organizations of the system of the Ministry of Internal Affairs of Russia, as well as veteran organizations of the internal affairs bodies sent their proposals.