This applies to both books and scores. The existence of a plus or double plus sign does not make the call number unique.
Non-plus = less than or equal to 26 cm. in any direction (height or width)
Plus = equal to or more than 27 cm. and up to or equal to 36 cm. in any direction (height or width)
Double-plus = equal to or more than 37 cm. in any direction (height or width)
M23, M219, M231: Sonatas for piano, violin, and violoncello
The class numbers for sonatas for piano, violin, and violoncello are further subdivided:
|All sonatas by one composer||Selected sonatas by one composer||Individual sonatas by one composer|
|M23||piano sonatas||M219||violin sonatas||M231||violoncello sonatas|
|M23.3||selected piano sonatas||M219.3||selected violin sonatas||M231.3||selected violoncello sonatas|
|M23.5||individual piano sonatas||M219.5||individual violin sonatas||M231.5||individual violoncello sonatas|
Practice varies, but M23.5, M219.5, and M231.5 are used even when the composer has written only one sonata for that medium.
M175.X6: music for xylophone, marimba, vibraharp, vibraphone is divided into two separate class numbers:
M175.X6: xylophone, vibraharp, vibraphone
Application of this practice has varied in the past. Marimba music can be found in both M175.X6 and M175.X9.
The class number for individual composer biography and criticism and interpretation is further divided:
|A101||= Writings, collected and selected|
|A104||= Single literary works|
|A105||= Anniversaries, festivals, congresses, etc.|
|A107||= Memorial volumes|
|A109||= Documents, interviews, etc.|
For exhibitions about a composer, use ML141. Cutter by city of exhibition, then by composer (one number only), e.g., ML141 P898 M9 for an exhibition about Mozart in Prague).
Cutter-Sanborn Three-Figure Author Table
We use the Cutter-Sanborn Three-Figure Author Table as the source for cutter numbers.
|Henry-Louis de La Grange||La Grange||lagrange (lagr=L178)||la grange (la=L111)|
|John La Montaine||La Montaine||lamontaine(lamon=L234)||la montaine (la=L111)|
|Helga de la Motte-Haber||De la Motte-Haber||delamotte (delam=D336)||de la motte (de=D278) or la motte (la=L111)|
|Carl Van Wyk||Van Wyk||vanwyk (vanw=V285)||van wyk (van=V217)|
Local practice for cutter numbers and Class M
Class numbers that are subarranged or cuttered by person, instrument, topic, or place
When a class number is subarranged or cuttered the cutter number may be found in Class M or may be established by using the Cutter-Sanborn Three-Figure Author Table. The sections below indicate when to use the cutter number given in Class M and when to use the Cutter-Sanborn Three-Figure Author Table, even when a cutter number is given in Class M.
Class numbers that are cuttered by instrument or topic:
Use the cutter numbers, when required and given, in Class M for the following classes:
All class numbers from M1-M2191
By person: Use the cutter number already established for this person:
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | V | W | XYZ or the Cutter-Sanborn Three-Figure Author Table for the composer, performer, etc. followed by a cutter number for main entry if needed in classes:
By instrument or topic: Use the cutter number already established for the topic or the Cutter-Sanborn Three-Figure Author Table for the following classes:
By place: Use the Cutter-Sanborn Three-Figure Author Table to establish cutter numbers when any class can be specified by country or, following the table for ML198+, by state, province, etc., or city: