fantastic news from Dresden, it is now official that a great deal of the music manuscripts that vanished after 1945 are kept in the Glinka Museum and the Russian State Library in Moscow. This has long been the suspicion (f.e. in Jan Stockigt's paper on the 1765 Catalogo, see Further reading) and now it is confirmed by Dr. Karl W. Geck in last years 3rd edition of the SLUB Kurier (Saxon State and University Library newsletter). Visiting Moscow he looked at a number of manuscripts, including some who would have been in Zelenka's collection. The ones he mentions are probably the parts for works by Aldrovandini, Ariosti and Allegri's famous Miserere of which Zelenka's copy in Dresden is one of the earliest examples outside of the Vatican according to Wolfgang Horn.
This is incredibly exciting and as Dr. Geck says, could be "the tip of an imaginary iceberg". And he only looked through the letters A-C. The losses of the Dresden Library at the time included: The performance parts of the Catholic Court Church, 19th century manuscripts, librettos from the 18th century, opera partitures by Galuppi, Paer etc, and other opera and church music manuscripts, and it seems there are existing examples from all those categories.
Now we can only hope that the musicologists will be able to access this soon, but it will certainly be some time until we find out more, f.e. if all the Zelenka missing parts are there and possibly some missing works. What I really would like to see surface are the many missing works by Ristori and all the lost works from the Inventarium. And there are bound to be surprises in there as well!
In this context it is right to mention the vast collection of the Sing-Akademie Berlin which was brought back from Kiev, Ukraina in 2001 after it was considered lost in WWII. In it there are supposed to be 8 works by Zelenka, including ZWV 57, ZWV 8, Ecce quomodo from ZWV 55 and Cum Sancto Spiritu from ZWV 4. If anyone can shed a light on the remaining works it would be very much appreciated.