Browse DSIDetails of the item << Previous Next >> Welti Oswald O. W. ; Osw. Welti ; Emilie Bertha Trachsel 1843 Zurzach 1932 Lausanne Jean-Henry Welti mother Fanny Tschudi; photographer uncle Samuel Heer-Tschudi taught by photographer Samuel Heer-Tschudi; training in Paris 1860 Switzerland paleontologist Oswald Heer/C Schröter 1885 Pres. Photographische Gesellschaft Zurich 1890 & in Lausanne 1899 successor to his uncle, the photographer Samuel Heer-Tschudi ; photographer Paul Vionnet ; photographer Friedrich von Martens ; paleontological photography, collodium ; topographic; portraiture https://www.helveticarchives.ch/detail.aspx?ID=568902 Swiss National Library, graphics collection. Kirchheimer 1982: 5 ; Photographie et Arts graphiques Lausanne; c. 1863 accompanied Vionnet & Martens to Derborence, Valais, Val de Bagnes, Swiss Alps. 103242300
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