Creative Commons Sound Depository

Archived Web Pages and Content

Library of Congress's far ranging collection of blueprints, maps, newspapers, graphics, interviews, and videos.

"Search America's historic newspaper pages from 1836-1922 or use the U.S. Newspaper Directory to find information about American newspapers published between 1690-present."

"Project Gutenberg offers over 46,000 free ebooks: choose among free epub books, free kindle books, download them or read them online."

HathiTrust is a partnership of academic & research institutions, offering a collection of millions of titles digitized from libraries around the world. The HathiTrust Digital Library brings together the immense collections of partner institutions in digital form, preserving them securely to be accessed and used today, and in future generations.

"Access to print, pictorial and audio-visual collections and other digital services"

NYPL Digital Collections provides free and open access to nearly 700,000 images digitized from the The New York Public Library's vast collections, including illuminated manuscripts, historical maps, vintage posters, rare prints, photographs, streaming videos, and more added each day.

Google's mapping software for downloading. Pro version is now free and offers additional data layers.

Open access GIS System. Values individual and local contributions.

Historical maps sorted by time period and location.

Digitized map collection from the Library of Congress

In 2009, USGS began the release of a new generation of topographic maps (US Topo) in electronic form, and in 2011, complemented them with the release of high-resolution scans of more than 178,000 historical topographic maps of the United States

Digitized collection of international maps

TIGER (Topologically Integrated Geographic Encoding and Referencing) products are spatial extracts from the Census Bureau's MAF/TIGER database, containing features such as roads, railroads, rivers, as well as legal and statistical geographic areas.

DataDryad.org is a curated general-purpose repository that makes the data underlying scientific publications discoverable, freely reusable, and citable

The United States Goverments Open Access Repository for Data Sets.

"re3data.org is a global registry of research data repositories that covers research data repositories from different academic disciplines. It presents repositories for the perma"nent storage and access of data sets to researchers, funding bodies, publishers and scholarly institutions. re3data.org promotes a culture of sharing, increased access and better visibility of research data.

Contains repositories for Astronomy and physics, Biology and life sciences, Chemistry, Computer science and source code, Earth, ecology, environment, and geosciences, GIS and geography, Humanities and social sciences, and Species-specific repositories

"WorldWideScience.org accelerates scientific discovery and progress by providing one-stop searching of databases from around the world"

"Data for Research is a free service for researchers wishing to analyze content on JSTOR through a variety of lenses and perspectives. DfR enables researchers to find useful patterns, associations and unforeseen relationships in the body of research available in the journal and pamphlet archives on JSTOR. To this end we provide data sets of documents to researchers: OCR, metadata, Key Terms, N-grams and reference text."