William Blake PR4140-4148
(for works dealing primarily with Blake as a visual artist, see class N on sixth floor)
Robert Burns PR4300-4348
George Gordon, Lord Byron PR4350-4398
Samuel Taylor Coleridge PR4470-4488
Thomas DeQuincey PR4530-4538
William Hazlitt PR4770-4773
John Keats PR4830-4838
Charles Lamb PR4860-4864
Mary Shelley PR5397-5398
Percy Bysshe Shelley PR5400-5448
William Wordsworth PR5850-5898
Subject headings for Romanticism can be found in the 30th edition (2007) of the Library of Congress Subject Headings, the five-volume set of large red books located on the green cabinet beneath Shakespeare's portrait on the library's seventh floor. From volume IV, page 6404, use the heading Romanticism, which may subdivide geographically and which breaks down as follows:
PN56.R7 (Theory)
PN603 (General history)
PN750-759 (Eighteenth & nineteenth centuries)
Please note that these call number ranges are on the library's sixth floor, not the seventh floor.
For a shelf-browsing, call number approach, use the 2008 edition of the Library of Congress Classification for PR, PS, and PZ, located adjacent to the Library of Congress Subject Headings on the green cabinet. It is an extremely detailed listing; among the useful call number ranges for Romantic literasture are
History of English Literature/Poetry/Romanticism.Return to nature (1750-1830) PR571-579
History of English Literature/Drama/Romanticism.Return to nature (1750/80-1830) PR716-719
History of English Literature/Prose/Collected essays//Romanticism (1750/80-1830) PR756.R65
History of English Literature/Prose/The novel//Romanticism (1750/80-1830) PR830.R73; 18th & 19th centuries PR851-869
The classification for the entire class P of language and literature can be found here:
http://www.loc.gov/aba/cataloging/classification/lcco/lcco_p.pdf