all
- British repository, London, contemporary
- Prussian transport company, 19th century
- Berlin-based slide manufacturer
- German photographer and slidemaker who worked for the Staatliche Museen in Berlin
- London-based slide manufacturers and dealers, fl. 1850s-1940s
- German photographic printing company, active 1894-1921
- architectural firm, founded 1967
- German lantern slide and photograph vendor, ca. 1890s-1950s
