The inexhaustible resources of astronomical libraries and librarians in the context of the "Third Mission"

Public Engagement (PE) and valorization of cultural Heritage are part of the tasks of the Third Mission, also definied as knowledge transfer of Research Centres and Universities towards the socioeconomic context and local territory. What role can the Library play in this process? The present poster gives a picture of the great amount of third mission activities and events carried out by INAF Arcetri Astrophysical Observatory Library in the last decade. These projects have a double level of developement: national, in collaboration with the other INAF libraries, archives and museums, and local in osmosis whit the Public Outreach (PO) Office of the Arcetri Observatory. The analysis of these activities can offer some indications about the growth and the multiformity of relationship between a Research Library and Society.eng