This site is dedicated to the study of the Katipunan, the patriotic secret society that in 1896 launched the revolution against Spanish rule in the Philippines. 

Although the late 19th century is the most celebrated period in Philippine history, much of what has been published on the Katipunan is unreliable and the surviving primary sources are as yet largely unexplored. The principal aim here is to bring to light a number of important Katipunan documents that have not been published before, or are not readily accessible.