At the turn-of-the-century, Kaufmann guided Herbert J. Mothersill (1868-1937) four times, including not only trips in the Bernese Oberhand (Wetterhorn, Schreckhorn, Jungfrau, Finsteraarhorn, Eiger-Mitteleggi, and Silberhorn in 1895 and 1896) but also to Zermatt (Matterhorn, Breithorn, Weishorn, and Rothorn) and Chamonix (Mont Blanc in 1897); ironically, after many challenging climbs, Mothersill died after being fatally injured in a traffic accident.