the best of both contemporary and classic reference works into
a comprehensive public reference library.
Digital Public Library of America The DPLA offers a single point of access to millions of items — photographs, manuscripts, books, sounds, moving images, and more—from libraries, archives, and museums around the United States.
Ready Reference Contains
all of the basic research tools, such as dictionaries and encyclopedias,
that you expect to find in a library.
A free virtual reference center that simplifies the search for
the best resources online including acronyms, current events,
dictionaries, encyclopedias, maps, public records, quotations,
statistics, thesauri, and more.