This collection consists of approximately 800 daguerreotypes, ranging from 1/16 inch to full-plates, dating from the early 1840s to the early 1860s. The majority of the items are cased portraits and many of the sitters have been identified. Several of New England's leading daguerreotypists are represented in the collection, such as Southworth & Hawes, John Adams Whipple, John D. Heywood, Lorenzo G. Chase, and John Plumbe, Jr. There is a small but significant quantity of architectural views, including 14 daguerreotypes by Calvin Wheeler Philleo or Stephen Lucas taken in Plymouth, Massachusetts in the early 1850s.Source: Guide to the Library and Archives, 2.