The present letter is an invitation to the workshop organized as a part of the project “The Nile Delta as a centre of cultural interactions between the Upper Egypt and the Southern Levant in the 4^th millennium B.C.”, funded by  Foundation for Polish Science. The main aim of the workshop is to present the project and its results, but also to show other archaeological works and projects carried out in the Nile Delta and in the neighboring regions – the Upper Egypt and the Southern Levant, essential for understanding the role of the Delta in the 4^th millennium B.C. For the Polish Archaeological mission to the Eastern Nile Delta the workshop is also an opportunity to celebrate 15^th anniversary of the excavations at Tell el-Farkha.