You can search for articles using databases or indexes. Many provide the full text of the article, while some databases display a link to library holdings, i.e., does the Auraria Library provide access to this article?
There are a number of local cultural institutions that could be very valuable to your research. Examples include:
Contact colleagues and professors in your department, and across the globe. Listservs may be a great tool to communicate or get ideas for your research.
Your local librarian may also be a great source of information!