Dear Ms. Brown,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the series Reales Ordenes Y Decretos (Royal Orders and Decrees), 1767 - 1854 in the Records of the Spanish Governors of Puerto Rico (Record Group 186) that may include land and tax records for the time period that you seek. For access to these records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at email@example.com.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
We also suggest that you contact the Municipal Historical Archive of Ponce, the Historic Archive of the Autonomous Municipality of Ponce and the Puerto Rico Archives to request a search for the land and tax records of Eugenio Valero. In addition, you may wish to contact the Portada del Archivo Histórico Nacional in Madrid for information about their holdings of colonial Puerto Rican records.
We hope this is helpful. Best of luck with your research!