One very useful tool for locating relevant material is OneSearch, the library's main search catalog.
Here are some possible subject headings you might try:
- Hispanic Americans -- Cultural assimilation
- Hispanic Americans -- Education
- Spanish language -- Social aspects
- Spanish language -- United States
- Spanish language -- Influence on English
- English language -- Influence on Spanish
- Bilingualism
- Code switching (Linguistics)
- Sociolinguistics