Many books are not available online, so be sure to look at the Find print copies of books section if you don't find what you need.

• 20th century books: Try Google Books (full text available for 17th century-1923). It is difficult to find online versions of books that are still under copyright (generally, 1923-present), but try looking through the Library's list of E-books.
• 19th century books:Use Shaw-Shoemaker Online (1800-1819) or Google Books (full text available for 17th century-1923).
• 18th century books: Use the Evans Digital Collection of American publications (1639-1800) or Eighteenth Century Collections Online.
• 17th century and earlier books: Use the Evans Digital Collection of American publications (1639-1800) or Early English Books Online.