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 Spanish Literature, try browsing these sections (on the 3rd floor of Seymour Library):
PC 4001-4977 Spanish
PQ 6001-8929 Spanish Literature
PQ 6001-6168 History & Criticism
PQ 6001-6056 General
PQ 6058-6060 Early to 1500
PQ 6061-6073 Modern
PQ 6075-6098 Poetry
PQ 6098.7-6129 Drama
PQ 6131-6153 Prose
PQ 6155-6167 Folk Literature
PQ 6271-6498 Individual authors & works to 1700
PQ 6500-6576 Individual authors, 1700-ca. 1868
PQ 6600-6647 Individual authors, 1868-1960
PQ 6650-6676 Individual authors, 1961-2000
PQ 6700-6726 Individual authors, 2001-
PQ 7000-8929 Provincial, local, colonial, etc.
PQ 7081-8560 Spanish America
DP 1-402 History of Spain
F 1201-3799 Latin America. Spanish America
F 1201-1392 Mexico
F 1401-1419 Latin America (General)
F 1421-1577 Central America
F 1601-2151 West Indies
F 2155-2191 Caribbean area. Caribbean Sea.
F 2201-3799 South America