Heinrich Gerber (civil engineer) - Wikipedia
Heinrich Gerber (1832 — 1912), German engineer | World
Heinrich Gerber (Bauingenieur) – Wikipedia
Heinrich Gerber - Wikipedia
Heinrich Gerber - The Historical Marker Database
Heinrich Gerber - Historica Wiki
Heinrich Gerber — Wikipédia
Heinrich Gerber - Wikipedia
Heinrich Gerber Biography - Pantheon
Heinrich Gerber's Manuscript of the Well-tempered Clavier: H.N. Gerber