Title: Classification and rules
Subjects: Horticultural exhibitions, World's Columbian Exposition (1893 : Chicago, Ill.), Congresses, Landscape architecture, World's Columbian Exposition (1893 : Chicago, Ill.) (uri) http://id.loc.gov/authorities/names/n80008759 (uri) http://viaf.org/viaf/sourceID/LC|n80008759
Places: Illinois, Chicago