The Progressive reference library a new edition with extensive revisions, constituting a consolidation of the publications formerly on the market under the titles: International reference work and The new teachers' and pupils' cyclopaedia; a library of history, geography, biography, biology, literature, economics, civics, arts, sciences, discoveries, explorations, inventions, commerce, etc.; cyclopaedia of general and recent information. - Holst, Bernhart Paul (Holst Pub., 1928)