Born out of misery, agricultural co-operatives have been walking hand in hand with farrners through economie, political and societal changes since the beginning of the 20th century.. Economie tool designed tofulfill the development of their members and their territories, they never stopped proving their capacities to adapt. However, their political model involving members to the decision-making process had suffered from changes such as diversification, the establishment of subsidiaries, the opening to non-co-operative partners.The place of members has to be reassessed, their loyalty being an undeniable asset for the co-op.This study is based upon the analysis of the minutes of the general assemblies of five agricultural coops.It aims at making history an asset in the management of the members: by building knowledge, history can feed communication towards members. Finally, it is proposed to carry out this research in a co-operative way so as to pool resources.