Browsing for books on the shelf can be a very useful way to gather material on a topic. Seymour Library uses the Library of Congress call number classification system, and all materials on a topic are shelved together. For philosophy, try browsing these sections:
Philosophy
B1-5802 Philosophy (General)
B108-708 Ancient Philosophy
B720-765 Medieval Philosophy
B770-785 Renaissance Philosophy
B790-5802 Modern Philosophy
BC1-199 Logic
BD10-701 Speculative philosophy
BD10-41 General philosophical works
BD95-131 Metaphysics
BD143-237 Epistemology. Theory of knowledge
BD240-260 Methodology