The American Memory collections contain many references about Puerto Rico, including photographs, prints, maps, songs, and oral histories. See the collections listed below for specific references.
African American Perspectives: Pamphlets from the Daniel A. P. Murray Collection, 1818-1907 has a pamphlet relating to Puerto Rico.
Architecture and Interior Design for 20th Century America: Photographs by Samuel Gottscho and William Schleisner , 1935-1955 contains photographs of Puerto Rico's Ponce De Leon Calle, and Thaddeus V. Soshe.
Built in America: Historic American Buildings Survey/Historic American Engineering Record, 1933-Present includes drawings and photographs of buildings, monuments and parks pertaining to Puerto Rico.
The Evolution of the Conservation Movement, 1850-1920 brings together a variety of materials related to conservation history, among them a statute concerning Puerto Rico.
California Gold: Northern California Folk Music from the Thirties. Collected by Sidney Robertson Cowell has many folk songs concerning Puerto Rico.
Touring Turn-of-the-Century America: Photographs from the Detroit Publishing Company, 1880 - 1920 has many images of Puerto Rico including photographs of the Governor's palace and of natives of Puerto Rico.
America from the Great Depression to World War II: Photographs from the FSA and OWI, ca. 1935-1945 has many photographs depicting the culture of Puerto Rico.
A Century of Lawmaking for a New Nation: U.S. Congressional Documents and Debates, 1774-1873 has historical records on Puerto Rico.
Map Collections, 1500-2003 contains additional maps and photographs of Puerto Rico and related areas. These can be found by searching for Puerto Rico, Caribbean, and Spanish American War.