The collection of non-music books held in Sibley Music Library have call numbers that begin with letters other than M. Other than those that are shelved in the Reference area (the first horizontal row behind the Music Reference Collection, on the Gibbs Street side), they are all located on the 3rd floor, immediately after the ML (literature on music) section towards the south end of the ranges.
Note: the non-ML Folios (Oversize) books are shelved in the back of the library, immediately following the ML Folios.
This is a brief outline of the subject areas for each letter.
| Classification Code | Description |
| A | General works (e.g. Encyclopedias, Dictionaries, Almanacs) |
| B | Philosophy, Psychology, Religion |
| C | Auxiliary sciences of history (e.g. History of civilization, Archeology, Biography) |
| D | World history and History of Europe, Asia, Africa, Australia, New Zealand, etc. |
| E | History of the Americas (America, United States) |
| F | History of the Americas (US local history, British America (including Canada), Dutch America, French America, Latin America) |
| G | Geology, Anthropology, Recreation |
| H | Social sciences (e.g. Economics, Sociology, Social problems, Communities, Classes, Races) |
| J | Political science |
| K | Law (including Religious law) |
| L | Education |
| N | Fine arts (e.g. Architecture, Sculpture, Painting, Print media) |
| P | Language and literature (e.g. French/Italian/Spanish/Portuguese: PQ ; English: PR ; American: PS ; Germanic and Scandinavian: PT) |
| Q | Science (e.g. Mathematics, Chemistry, Physics, Biology, Anatomy etc.) |
| R | Medicine |
| S | Agriculture |
| T | Technology (including Sound technology and acoustics) |
| U | Military science |
| Z | Bibliography, Library science, Information resources (General) |