Gustav Mahler | Gustav Klimt | Gustav Holst | Gustav III of Sweden | Gustav I of Sweden | Gustav Meyrink | Friedrich Gustav Jakob Henle | Gustav Stresemann | Gustav Noske | Gustav III | Gustav, Hereditary Prince of Sayn-Wittgenstein-Berleburg | Gustav Fischer | Hurricane Gustav | Gustav Nossal | Gustav Meier | Gustav Hertzberg | Gustav Albrecht, 5th Prince of Sayn-Wittgenstein-Berleburg | Johann Gustav Droysen | Heinrich Gustav Magnus | Gustav Stickley | Gustav Krupp von Bohlen und Halbach | Gustav Horn, Count of Pori | Gustav Fröhlich | Gustav Fechner | Gustav Adolfs torg | Gustav | Charles X Gustav of Sweden | Sweden's King Gustav III | Peter Gustav Lejeune Dirichlet | Johann Gustav Stickel |
Perhaps the greatest change in the second edition was the addition of new illustrations by Gustav Mützel, the brothers August and Friedrich Specht and others, which Charles Darwin said were the best he had ever seen.