English: This map outlines the regional distribution of ethnic Greeks in Albania around the turn of the 20th century, when the Ottoman Empire was collapsing.

Main sources used:
1. The Ottomon census of 1908, with data published in Destani and Psomas' works.
2. The Italian-run South Albanian census of 1913, with data published in Destani and Psomas' works. While many people believe it probably drastically undercounted the number of Greeks and overcounted Albanians, even the generally pro-Greek Psomas notes that it is the most objective source available with regards to the Aromanians (which were neglected in both the Ottoman and the Greek wartime statistics about the area, both of which tended to count Aromanians as Greek).
3. The Albanian census of 1918, with data referenced in Siegfriend, Seiner and etc.

Note: 1. I couldn't find info for the exact boundary between the Leskovik and Erseka kazas, so the line drawn here is an approximation.

2. Due to the lack of comprehensive data on Albania from that time, and the conflicting figures in many different sources, the percentages in many regions are approximations. Thus, this map should not be taken as an absolute measure.