I'm studying U.S. - Latin American History and I'm wondering if there's a database(s) or online collection(s) of Spanish language primary and secondary sources that I could use for research. I speak and read Spanish and I'm hoping to fill in the big blank of "what the 'other side' thought/thinks" that I see in many of the otherwise fantastic English-language sources I'm using.

I'm currently focusing primarily on 19th century Cuba, so if you know of any Spanish-language sources from Cuban historians (marxist or not) or Spanish historians both contemporary or modern day, I'd love to hear them. Thank you!