| Call Number | Floor |
| A-GB | 3 South |
| GC | 3 South |
| GE-PZ (Sci) | 3 South |
| Q | 3 South |
| QA | 3 South |
| QB | 3 South/Central |
| QC | 3 Central |
| QD | 3 Central |
| QE | 3 Central/North |
| QH-RZ (Periodicals) (Monographs) |
See note below 2 North |
| S | 3 North |
| Dissertations (all call numbers) | Lower Lever SW |
| Call Number | Floor |
| T-TL | 3 North |
| TN-TZ | Lower Level SW |
| U-V | Lower Level SW |
| XX K | Lower Level SW |
| WSci | Lower Level SW |
| Z (Sci) | Lower Level SW |
| Dewey Decimal 000-589 | Lower Level NW |
| Dewey Decimal 590-999 | Lower Level East |
| Harvard-Yenching | Lower Level NW |
| Non LC-classed M's and T's | Lower Level W |
| f or xf | 3 Northeast See note below |
f or xf
xf before an Library of Congress call number indicates the the item locates in the folio (oversize) shelving on the northeast corner of the 3rd floor. All oversize LC books are on the 3rd floor. Folio shelving for Dewey Decimal books is in two places: the oversize stacks along the east side of compact shelving, and in the Dewey Warehouse (room 018). Please ask library staff if you need assistance.
f indicates the item most likely shelves in the regular stacks, but in some cases may have ended up with the extended folios on the 3rd floor. Please check both the regular and the folio shelves for items over 12" in height. For further assistance please see staff at the Circulation Desk.
Biomedical Journals
Bound Biomedical periodicals are shelved alphabetically by title on the second floor. Please disregard the call number.
QH-Z monographs are shelved by call number after the journal section.
University of Chicago dissertations and theses are grouped together on the Lower Level, just after the end of the Library of Congress call numbers but before the start of the Dewey collection.
Dewey Decimal 000-999:
Books with Dewey Decimal System call numbers are shelved on the lower level. Many books in the Dewey Collection have an L preceding the call number indicating the item is a larger than standard size, but most of these are shelved with the regular sized material. When an A appears to the left of a Dewey Decimal call number, the item may be shelved in the oversize stacks along the east side. Please check both the regular and oversize shelves for items over 13" in height. Especially large items may be in our "warehouse" (room 018). For assistance please see staff at the Circulation Desk.
WSci materials
The Library has reclassified books with WSci call numbers into Library of Congress (LC). If you find a WSci book, or are looking for one, please consult library staff.
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Library of Congress (LC)
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Dewey Decimal (DDC)
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You can also view the entire LC classification outline, including details of each subclass listed above. The outline is produced by the Library of Congress Cataloging Policy and Support Office. The Dewey Decimal Classification is © 1996-2001 OCLC Online Computer Library Center, Incorporated. Used with Permission. DDC, Dewey, and Dewey Decimal Classification are registered trademarks of OCLC Online Computer Library Center, Incorporated.
