The Sid Lapidus '59 Collection on Liberty and the American Revolution features more than 150 recently gifted important books, pamphlets and prints representing the major themes of Lapidus' collecting: the intellectual origins of the American Revolution; the Revolution itself; the early years of the republic; the resulting spread of democratic ideas in the Atlantic world; and the effort to abolish the slave trade in both Great Britain and the United States. On the occasion of the gift in 2009, the Library published an illustrated color-printed 200 page catalogue, the main portions of which are now available as PDF files. Colleagues at the Gilder Lehrman Insitutue for American History have selected documents from the scanned Lapidus collection and created supportive materials for school curriculum. During 2013 and 2014, the Library added more than 85 books on the topics of slavery and the slave trade in the empires of Great Britain and France. The books are part of his large private collection and Mr. Lapidus generously made them available for scanning.