The article deals with two works of F.F. Simonovich“Description of Southern Dagestan”and “Description of Tabasaran”, written in 1796 with the creation of the map of the southern Dagestan. The second work is devoted toTabasaran. Both works contain a number of socio-economic issues of Tabasaran in the end of XVIII century. They relate to the characteristics of the possessions of the Tabasaran - themaisuma, the qadi and rural communities united under the name Devek Elemi where the names of the lords with the centres of their possessions, the number of villages, population, and armed forces of each of them and their total number are given. Dwelling upon the Tabasarans’ work, F.F. Simonovich gives the description of the economic development of different parts of Tabasaran, focusing on the development of various branches of agriculture, which gives the total picture of the economic status of Tabasaran in general and also of its possessions and the unions of rural communities. The work by F.F. Simonovichisa very good and reliable source on the history of Tabasaran and Dagestan of the late XVIII century.