Klaus Mollenhauer (1928-1998) is considered one of the most significant and high-profile German educational researchers of the 20th century. The establishment of social pedagogy as a scientific branch of educational science at universities is distinctly based on Mollenhauer´s theoretical contributions as well as on his involvement in public debates and subject-specific discussions in the 1960s and 1970s. To this day, the promotion of the term emancipation to a leading orientation for both general pedagogy and professional processes of self-understanding in pedagogic fields of action in the 1970s is closely related to his name. Opening educational science for culture-theoretical and -historical questions was a central topic of Mollenhauer´s works in the 1980s. This is highly recognised today, especially in Anglo-American as well as Asian countries. Also, his works on aesthetic education were essential to the according research in the 1990s. Parts of his written works have been translated into various languages early on since the 1970s. Above all, an international reception of Mollenhauer´s latest works can be observed today whereas in his native country his publications can merely be found scattered or on an antiquarian basis. This particular desideratum shall be corrected by means of publishing a commented recension edition of his collected works. The digital edition of all printed works and of some parts of his assets will be obtained at three university locations (Göttingen, Berlin and Osnabrück). Based on this digital edition a print and open access version will be edited containing a textual as well as an apparatus part.