Instituto Cervantes New York Family Membership. Instituto Cervantes is a not for profit organization created by the Spanish government in 1991. Its mission is to promote the Spanish language and to contribute to the advancement of the cultures of all Spanish speaking countries and communities. This membership is valid for 2 individuals residing at the same address. Membership provides full borrowing privileges at their library and discounts to cultural activities. Membership must be redeemed by August 31, 2016.