This page is still in preparation, but may nevertheless be of interest in its incomplete state.
The Hupfeld Piano Factory - Böhlitz-Ehrenberg, Leipzig, 1920s.
Pianists and Repertoire
The Triphonola Music Roll Catalogue - Leipzig, 1927.
The Triphonola Recording Process
Hupfeld Animatic Roll Perforating Machines - Leipzig, 1920s.
Website Links and Other Sources of Information