File:L. Boccherini, Six quatuors conertants à deux violons Alto et Basse . Oeuvre XI, Amsterdam, Hummel (?1785).jpg - Wikimedia Commons
Hummel, Johann Nepomuk - Fantasy for Viola and Orchestra - Viola and Piano - edited by Fernand Oubradous - Transatlantic Edition (Presser) | SHAR Music - sharmusic.com
Estatuilla Hummel Goebel José Natividad TMK4 NBR 214/B figura 7 1/2" alto ~ que ha | eBay
Original figura de ceramica alemana hummel goeb - Sold through Direct Sale - 114381655
Goebel Hummel TKM-4 Apple Tree Boy Figura 10 1/2" alto 142-V | eBay
saxophone hummel ecossaiseASAX sheet music - 8notes.com