Already during the lifetime of the composer, the Bayerische Staatsbibliothek started collecting the works of Richard Strauss systematically. Today, the library holds the largest Strauss collection held by any public-sector institution worldwide, which continues to be complemented. At the end of 2019, the Bayerische Staatsbibliothek newly acquired a short score on Strauss's opera "Die schweigsame Frau"; in January 2020, a short-score sheet on his unfinished symphonic poem "Die Donau" could be acquired.
Encompassing almost 200 music manuscripts, the collection of music manuscripts of Hans Pfitzner is even more extensive. It is composed of several individual collections of personal papers, purchases and donations.
The digital copies of the music manuscripts of Richard Strauss and Hans Pfitzner are now available online almost in their entirety to everybody interested.