1880—Chicago, Illinois
Lyon & Healy, an instrument distributor and manufacturer, includes 2 alto valve trombone models in its catalog. Both are labeled as E-flat instruments (see below image; public domain) (Lyon & Healy 1880, 33).
Lyon & Healy, an instrument distributor and manufacturer, includes 2 alto valve trombone models in its catalog. Both are labeled as E-flat instruments (see below image; public domain) (Lyon & Healy 1880, 33).