On 24/4/1987 in Fribourg, Switzerland, an Association was founded under the name of "Association of Friends of the Historical Library of Andritsaina" and, a month later, the Greek Association of Friends of the Library of Andritsaina was founded in Greece. The founder of both clubs was Dr. P. Petropoulos, who sought to save and preserve the historical collection of Nikolopoulos through collaborations that would allow the promotion and outreach of the Library. In 2004, these associations donated technical and logistical equipment to the Library, and set up and equipped a conservation laboratory. Founded on the generosity of its members, the Swiss Union, chaired by P. Petropoulos (1987 - 2003), Martin Nicoulin (2003 - 2017) and D. Tselepis (2017 to date), has demonstrated, for over 30 years since its founding, major and important work for the benefit of the Library of Andritsaina.