1975-11-25: Christmas 1975 - For the City of Children

1975-11-08: Christmas 1975

1975-10-24: UN (United Nations), 30th Anniversary

1975-10-09: International Women’s Year 1975.

1975-08-14: National Philatelic Exhibition, 6th Ed.

1975-08-01: Sesqui. of annexation of Nicoya District

1975-04-16: 16th Central American Radio Amateurs’ Convention

1975-03-07: 1st Central American Orchid show