Scope and Contents Note From the Collection: This collection primarily consists of maps, plans, and drawings of Centennial grounds and Centennial buildings. The collection is especially strong in items relating to the Art Gallery (Memorial Hall), Horticultural Hall, the Main Exhibition Building, and Machinery Hall. There are a very limited number of related correspondences and advertisements housed within this collection, as well as plans of machinery to be used in buildings during the Centennial Exhibition (such as air conditioning...