| M90–M94 | Trombone or bass trombone alone: |
| M90 | Collections (more than one composer) |
| M91 | Original works: collections (one composer) |
| M92 | Original works: separate |
| M93 | Arrangements: collections (one composer |
| M94 | Arrangements: separate works |
| M262-M263 | Trombone or bass trombone with piano: |
| M262 | Collections |
| M263 | Separate works |
| M288–M289 | Duets for two wind instruments (of all kinds): |
| M288 | Collections |
| M289 | Separate works |
| M290–M291 | Duets—one stringed and one wind instrument |
| M296–M297 | Duets—one wind and one plucked instrument |
| M315–M319 | Piano and two wind instruments |
| M320–M324 | Piano, one stringed, and one wind instrument |
| M335–M339 | Piano, one wind, and one plucked instrument |
| M355–M359 | Three wind instruments |
| M360–M364 | Three stringed and wind instruments |
| M375–M379 | Three wind and plucked instruments |
Concertos and similar pieces
| M1032 | Trombone with orchestra, full scores |
| M1032.5 | Cadenzas for such works |
| M1033 | Trombone with orchestra, piano reductions |
| M1132 | Trombone with string orchestra, full scores |
| M1132.5 | Cadenzas for such works |
| M1133 | Trombone with string orchestra, piano reductions |
Studies and methods
| MT460 | General works |
| MT462 | Systems and methods |
| MT463 | Teaching pieces |
| MT464 | Instructive editions |
| MT465 | Studies and exercises |
| MT466 | Orchestral studies |
| MT467 | Two trombones |
| MT468 | Self-instructors |
| MT472 | Bass trombone or contrabass trombone |
Classification Numbers for Books about the Trombone
| ML128 .T76 | Trombone bibliographies |
| ML965 | General works |
| ML966 | Construction |
| ML968 | Music and playing |
