1904—Lockport, Louisiana
A photograph of the Matthews Band of Lockport, Louisiana shows both a valve trombonist and a slide trombonist in the 12-member group (see below image) (public domain image; source: wikimedia commons).
A photograph of the Matthews Band of Lockport, Louisiana shows both a valve trombonist and a slide trombonist in the 12-member group (see below image) (public domain image; source: wikimedia commons).