from the Hörs sandstone and depicting the geological charts (with GustafLinnarsson). The standard author abbreviation Tullberg is used to indicate this
1862–1866: Ulrik Mikael Lundgren 1866–1870: Nils Linnarsson 1870–1920: Johannes Kerfstedt 1920–1936: Gustaf Norrman 1936–1963: Georg Landberg 1963–1982: Allan