To locate books about a specific person or topic, use the Subject Search in the OPAL Library Catalog. Each book has been tagged with specific subject headings that describe its content.
A wide variety of subject headings are useful in locating materials related to keyboard instruments.
It is also possible to search for related books that discuss a particular country or time period.
The following table outlines call numbers for materials on instruction & study for string instruments.
| Violin | Viola | Cello | Bass | |
| General works | MT 260 | MT 280 | MT 300 | MT 320 |
| Method books | MT 262 | MT 282 | MT 302 | MT 322 |
| Studies & exercises (etudes) | MT 265 | MT 285 | MT 305 | MT 330 |
| Orchestral studies & special techniques | MT 266-272 | MT 286-282 | MT 306-310 | MT 331-333 |