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- Padial, Luis Ricardo. (1)
- Partido Liberal Reformista (Puerto Rico).--Comité Central. (1)
- Partido Republicano Puertorriqueño. (1)
- Political parties--Puerto Rico. (6)
- Puerto Rico--Biography. (1)
- Puerto Rico--Description and travel. (3)
- Puerto Rico--Economic conditions. (1)
- Puerto Rico--History--1898-1952. (1)
- Puerto Rico--History--Insurrection, 1868. (1)
- Puerto Rico--History--Periodicals. (1)
- Puerto Rico--History--To 1898. (4)
- Puerto Rico--History. (8)
- Puerto Rico--Politics and government--1898-1952. (2)
- Puerto Rico--Politics and government--To 1898. (22)
- Puerto Rico.--Real Audiencia. (5)