1968-10-24: Summer Olympic Games 1968 - Mexico City

1968-09-02: 20 Years UNICEF - Children's Fund Emblem, U.N.

1968-09-02: 20 Years World Health Organisation - Aesculapius

1968-04-29: Europa (C.E.P.T.) 1968 - Key

1968-03-18: International Human Rights Year