Columbia subject headings:
Diego, José de, 1866-1918--Political and social views.
Puerto Rico--Politics and government--1898-1952.
Puerto Rico. Legislative Assembly. House of Delegates.
Harvard subject headings:
Diego, José de, 1866-1918--Political activity.
Puerto Rico--History--1898-1952
Puerto Rico--History--Autonomy and independence movements.
Princeton subject headings:
Diego, José de, 1866-1918.
Puerto Rico--Politics and government--1898-1952.