1878—Chicago, Illinois
Lyon & Healy, an instrument distributor and manufacturer, includes an alto valve trombone, specifically labeled an E-flat instrument, in its commercial catalog (see below image; public domain) (Lyon & Healy 1878, p. 23).
Lyon & Healy, an instrument distributor and manufacturer, includes an alto valve trombone, specifically labeled an E-flat instrument, in its commercial catalog (see below image; public domain) (Lyon & Healy 1878, p. 23).