CIMCIM maintains the international system of sigla for musical instrument museums and collections. This provides a convenient short notation designating collections which can be used by scholars needing to cite instruments and other music-related artefacts in collections. The working group updates the system as necessary, for example when museums change name, collections change ownership, or collections newly emerge as research resources. See here the current list of sigla.
Horniman Museum and Gardens
mbirley (at) horniman.ac.uk
Cité de la musique-Philharmonie de Paris
jpechard (at) citemusique.fr