During the Russian-Turkish war of 1768-1774 Bucharest was occupied by the Russian army twice. In the hope of annexing new territories, the Russian military administration has ordered the elaboration of few topographic maps and plans relating to the capital of Wallachia. Now it's well known only two topographic sources made in that time period such as a city plan on January 29, 1770, which was found by the historian Nicolae Docan in the Archive of War of Vienna, and the city plan of 1770, which was put into a scientific turn by the historian Ion Ionaşcu that stored in the Russian State Military - Historical Archive of Moscow. Both ones are the earliest topographic documents referring to the Romanian capital. Another plan of Bucharest was carried out on February 11, 1772 by the initiative of Russian military administration and it was found by us in the same archive of Moscow. The document was made by the topographer Jacob Khrushchiov and it has given a lot of useful information on the historical topography of Bucharest, representing a valuable source for the study of the process of urban development of settlement. There is the street and road network of the city and residential areas, as well as the main churches, monasteries and boyar's houses at this plan. At present this document is the second oldest topographic source of the capital of Romania.