How to find primary sources
Books, plays & poetry
Early English Books Online (EEBO) (is a full-text and full-image database of books printed in the British Isles, British America, and other countries from 1475 to 1700)
Eighteenth Century Collections Online (ECCO) (contains significant English-language and foreign-language titles printed in Great Britain and the Americas in the eighteenth century)
Literature Online (LION) (contains drama, poetry, and prose from around the world)
American Film Scripts Online (part of the Alexander Street Press Core Collections -- contains scripts with detailed, fielded information on the scenes, characters and people related to the scripts, which are authorized versions of the texts)
See also the Finding Primary Sources: Literary Works guide and the Finding Primary Sources: Non-Literary Works guide.