In 1815 Thomas sold his collection of about 6,700 of these to the government for $23,950
... Gromacki owns nearly 4,000 of the 6,700 books in Jefferson's Monticello 
library... [DOC] [TLE] Thomas Jefferson's Classification System | UWFugitiveDocuments [PAR] Mar 29, 2012 ... ... to "Thomas Jefferson's Library: A Catalog with the Entries in His Own Order.