Circulars of Censorship Department on supervision of printing-houses and book trade in second half of 19<sup>th</sup> - early 20<sup>st</sup> century
Circulars of Censorship Department of the Russian Empire are by-laws, regulating the process of censorware and functioning of the censorship institutions. The article devotts to stored in the Russian state historical archive circulars, touched supervision over the printing and book trade, which will allow more detailed study of the performance practices of the censorship laws, and the effectiveness of censorship's oversight.