Both horns are on loan from the Greenleaf Collection at the Interlochen Center for the Arts. The one on the left is a special Sousaphone created by the Conn company in 1924 on the occasion of its 50th anniversary. It was hailed as "the world's largest playable Sousaphone." . The raincatcher on the back wall is the so-called "Original Sousaphone," built by Conn around 1905 and very likely used in the Sousa Band for years.
