Karl Schapper, among others. In June 1846, the Wuppertal communist Gustav Adolf Koettgen approached the Brussels committee and suggested that the German...
5 KB (496 words) - 15:41, 19 March 2024
was a member. In 1879 he married Anna Koettgen (1855–1901), the daughter of the painter Gustav Adolf Koettgen, a landscape painter and craftswoman who...
11 KB (1,244 words) - 17:49, 7 March 2024