I recently made an inquiry to the Stadtarchiv in Bonn about Brambach's Nachlass which is kept there. There is no online list of that collection, but it appears that among other things his autographs to the Piano Concerto op. 39 and opera Ariadne are held there. Regrettably, they reported back to me that they don't have any materials of Brambach's Symphony, premiered in 1863, which was the work I was most looking forward to find.
Too bad. Perhaps that score is in another cupboard someplace else, or not...
Too bad. Perhaps that score is in another cupboard someplace else, or not...