Informe secreto de Sinibaldo de Mas
By: Spanish original with an English translation by Dr. Carlos Botor, revised by Alfonso Felix, and an intrduction and notes by Juan Palazon
Publisher: Historical Conservation Society
Published: 1963
Place of publication: Manila
Language: eng; spa
Number of pages: 215
Other titles: Informe sobre el estado de las islas Filipinas en 1842.; Report on the condition of the Philippines in 1842.
Notes: Cover title: Report on the condition of the Philippines in 1842. III. Interior politics.  Secret report.

Vol. 3 of his Informe sobre el estado de las islas Filipinas en 1842.