Puerto Rico Slavery Records

Slavery Registry of 1872
In 1872, the Spanish government ordered a central registry of all slaves living in Puerto Rico at that time. This data is available at FamilySearch (images only) and Ancestry.com (index only). This record type is fairly unique for Latin America as it was created the year before the slaves were freed by the government in 1873. The records helped the government compensate owners for each freed slave. Even so, slavery continued in spots for several more years.
 * 1872 Puerto Puerto Rico, Registro Central de Esclavos (Slave Registers), 1872, images
 * Links to FamilySearch images organized by location are available at this blog
 * Also at Ancestry.com index($)

Other Slave Documents
Additional slave documents are available at FamilySearch and the New York Public Library Digital Collection.
 * 1863-1879: at FamilySearch; index & images
 * 1867-1876 at FamilySearch; images (*)
 * Puerto Rican Slave Documents, New York Public Library, index and images

Church and Notarial Records
Puerto Rico catholic and notarial records mentioned slaves by name, including age, sex, family relations.

Our Caribbean Ancestry
Our Caribbean Ancestry (Genealogia Nuestra) is a blog by Anna Bayalo dedicated to Caribbean genealogy. It has a specific focus on
 * Puerto Rico genealogy
 * Slave records in the Caribbean