The main written sources that were used belong to the Historical Archive of EYDAP, mainly from the excerpts of the texts used in the Anniversary Exhibition of EYDAP under the title, "The Great Challenge: the 90 Years of the Marathon Dam", while the newspapers of the time have also been used as primary sources. The testimonies of people who lived in the settlement of the Marathon Dam have also been used as oral sources as they were collected by the Oral History Team of the Employees of EYDAP, either from their descendants or from residents of a nearby village, between the 1950s and 1960s. Through the combination of different sources, multiple narratives about the location of the settlement were created. These are, in large, the personal interpretations of the historical events that took place in this area, as well as of the significant technical project that was realized in the 1930s and the people who worked in it forming a small community.