Ethnic NewsWatch (ProQuest)Covers 1990 to present and includes newspapers, magazines, and journals of the ethnic and minority press, offering both national and regional coverage. It also includes Ethnic NewsWatch: A History™, the historical file covering the years 1959-1989, offers a rare collection of over 30 full-text titles, focusing on African American, Hispanic American, and Native American presses from 1959-1989.
Go to Advanced Search Tab > More Search Options. At this screen, you can limit by "Document language" and Spanish is an option. Limiting to the Spanish will limit the number of publications searched.