Consult with the curators if you're interested in working with primary source material in the original. The personal papers below contain material on Cuba; the country file on Cuba may also be of interest.
If you're working on reproductive rights/health, see the SSC subject guide on Reproductive Rights and Women's Health
Center for Research Libraries (CRL) - Early in your research process, consult CRL for relevant primary source material. CRL staff members will provide tailored lists of CRL resources for researchers, including advanced undergradutes, upon request. More information here. CRL also offers extended loans of materias via interlibrary loan and electronic delivery.
You can also search the Center for Research Libraries Catalog.
See also the CRL Topic Guide: Latin American Studies.
Try a keyword search in the online catalog for Cuba - Sources or Puerto Rico - Sources. Other words used to reflect primary source material include: Correspondence, diaries, interviews, pamphlets, and personal narratives.
A fuller search might look like this: Cuba and (sources or correspondence or diaries or interviews or pamphlets or personal narratives)