The Official Calendar of the Republic is a project by PCDSPO that features historical events and official observances per calendar day of the year.

The Official Calendar of the Republic is a project by PCDSPO that features historical events and official observances per calendar day of the year.
The Historical Atlas of the Republic is the first of its kind in the country, presenting the historical, political, and economic developments of the Philippines from prehistoric times to the present, enlivened by comprehensive full-color maps and insightful narrative.
The Philippine Electoral Almanac traces the history of Philippine elections.