B. Van Leir map, 1751. This map is kept in the Hague in Brussels.
What makes this Dutch map, so important, is that it contains all the names of the districts of then Sinhale.
For example, Panangama, which today consisting of parts of Mannar, Vavuniya and Mullativu districts.
Anurajapura, has been made smaller, as initially, it consisted of parts of Mannar and was all the way to the coast and also what is today north Triquenamale district.
Many of the districts bore their original Sinhala names but now in many cases, they bare Tamilized names eg Waligama-Valikamaman.
Also notice, in the Eastern parts of the country in 1751. Their was still a district called Maha Rohana.