To locate works written by a specific philosopher enter the philosopher's name in an author search in the library catalog.
To locate works written about a specific philosopher enter the philosopher's name in a subject search in the library catalog.
It's usually best to start with a keyword search, but subject headings applied to relevant books can help to refine your results. Open the item record of a book that interests you. Scroll down to the clickable subject headings, and run another search to explore similar books.
You can also browse the headings associated with a particular topic as a way of getting started with your research.
Titles on Modern and Contemporary philosopy are cataloged with the broad subject heading Philosophy, Modern.
Some examples are:
The Cambridge Companion to Nietzche
GENERAL B3317 .C26 1996
Dictionary of literary biography: British Philosophers 1800-2000
REFERENCE PN451 .D5 v.262
The Foucault Reader
GENERAL B2430 .F721 1984
The Impact of Humanism on Western Europe
GENERAL B778 .I46 1990
The making of the modern world: visions from the West and East
GENERAL CB251 .M27 2002
Modern engendering: critical feminist readings in modern Western philosophy
GENERAL B791 .M64 1994