Kitsos co-operated with the American Agricultural School, the Bureau of Social Affairs of the
United Nations, the EOEX, the CARE Organisation, the National Centre, the Greek Ministry of Internal Affairs, the Greek Ministry of Agriculture, the Greek Ministry of Education, the Centre of Constant Training of Public Servants. E.R.A. (Ελληνική Ραδιοφωνία), the state radio station, often consulted Angelos's large disc library, that already numbered over 9000 discs in the 70s. In co-operation with the "Stavros S. Niarchos" foundation and the University of Athens, Angelos managed to build the Social Hospice, the International Centre of Culture and Tradition and the Unit of Natural Medicine. He also co-operated with the director group of Roberus Manthoulis, Photis Mesthenaios, Hercules Papadakis and as executive producer and script-writer produced, on the account of the National Foundation a number of films and documentaries. He also co-operated with Kostas Fronzos to build the 1st Student Hospice and with Froso Ioannidi to build the Pupil Hospice of Tsepelovo. In the Foundation for Restoration of Greeks from
Albania, he built the Centre of Professional Training of
Pogoniani, a move characterised by the Wall Street Journal as " major lesson of diplomacy in the
Balkans". == Activities in the Rizarios Foundation ==