Thank you for posting your question on History Hub!
The National Archives and Records Administration (NARA) is the depository of the permanently valuable, non-current records of the Federal Government. Our mission is to preserve the records and make them available to the public. As part of our reference service, we provide information about the records, make copies of the records for a fee, and make records available for use in our research rooms.
Being that the 1849 Philippine Claveria Decree was a historical event that took place in the Philippines that only affected their citizens, we suggest that you reach out to the National Archives of the Philippines to help you with your research. You can find their contact information by visiting the link below:
We hope this information is helpful and best of luck with your research!