Artescripta has more than one purpose.
The first of them is of course to share music with facsimiles, including rare music. 
But I also wish for the website to act as a database for other researchers who are investigating repertoire and forgotten music like me. 
This is why you will also find incomplete works on the website : their interest is not necessarily about buying them, but being markers of existence and serve as reference for further discoveries. And maybe one day, someone who’s in possession of the other missing parts will be very happy to find them here !
Music Publisher