This topographic street map of Istanbul covers four sheets, all published in 1982 by the General Staff of the Soviet Union.
The map is in the Russian language. It is printed in 10 colours, and is extremely detailed, with a contour interval of 5 metres. Buildings are classified by their function and material, roads by their width and material, and fields and forests by leaf type. There is a short text which describes the district, the city, its places of importance, and infrastructure (factories, power stations, and hospitals); and indexes to streets and major buildings.
Istanbul 1 
Istanbul 2 
Istanbul 3 
Istanbul 4
TROPICARTA also has 1:100 000 topographic map coverage of Turkey (requires Chomikuj account).