Sheet Music
M55-58 – Unaccompanied bass music
M238-239 – Bass and piano music
M286-287 – Two stringed instruments
M290-291 – One wind and one bowed instrument
M294-295 – One bowed and one plucked instrument
M310-314 – Piano and 2 bowed instruments
M349-353 – Three bowed instruments
M360-364 – Three bowed and wind instruments
M370-374 – Three bowed and plucked instruments
Call numbers between M400-999 follow the pattern established between M300-399.
The first digit indicates the number of performers and the last two the instrumentation.
Example: M549 – First digit is 5, so 5 musicians needed. Last two digits are 35, so instrumentation is any combination of bowed instruments.
M1018 – Bass concertos with full orchestra
M1019 – Bass concertos with piano reduction (originally full orchestra)
M1118 – Bass concertos with string orchestra
M1119 – Bass concertos with piano reduction (originally string orchestra)
MT320-330 – Studies and etudes
MT331 – Orchestral excerpts
Books
ML128.S7 – Stringed instrument bibliographies
ML128.D6 – Bass bibliographies
ML920-925 – History and criticism of bass playing (i.e. – history, construction, etc.)
MT320-330 – Studies and etudes (includes technique and period performance)
A new history of the double bass by 
A Double Bassist's Guide to Refining Performance Practices by