The most direct way to find films is a keyword search in our library catalog, restricting to the Video/Film format type.
Many - but not all - of our film catalog records receive a subject heading indicating genre. There are a few documentary-related headings: “Documentary films”, “Documentary television programs”, and “Documentary-style films”.
So -- to search the catalog for documentary films on a particular topic, try a keyword search for:
documentary and [your search term], limited to the Video/Film format type.
Hint: broaden your search term using the wildcard (asterisk *) in order to find spelling variants
Example: documentary and global* [finds "global", "globalization", etc.]
WorldCat - a collective catalog for a huge library network - is a great tool for identifying films & their distributors. We're often able to borrow films from partner libraries. Submit a request via interlibrary loan.