I recently played Weidig's Little Trio Op 9 for violin viola and piano (published by Merton) It's pleasant music for amateurs.
Weidig emigrated to Chicago in 1892 (see bio on klassika.de) and wrote quite a few works between then and 1920: Symphonic Suite 1906, Symphonic Fantasy ,,Semiramis" 1914 or "Abendgang" (Eventide)for Mezzo sopr and Orch op. 29, 1915. Has snyone heard these?