Basement Ground 1st 2nd 3rd Map

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Library of Congress Classification 

A B C D E F G H J K L M N P Q R S T U W Z 

Subclass C Auxiliary Sciences of History (General)
Subclass CB History of Civilization
Subclass CC Archaeology
Subclass CD Diplomatics, Archives, Seals
Subclass CE Technical Chronology, Calendar
Subclass CJ Numismatics
Subclass CN Inscriptions, Epigraphy
Subclass CR Heraldry

Subclass CS Genealogy
Subclass CT Biography