ACLS Humanities E-Book (HEB) is an online collection of around 5,000 books of high quality in the humanities, including digitized versions of already-published titles and a select list of new ("born digital") titles. These titles are offered by the ACLS in collaboration with 31 learned societies, over 100 contributing publishers, and the Michigan Publishing division of the University of Michigan Library.
ProQuest offers a single-point-of-access to an extensive and expanding global archive of dissertations and theses which has been designated as an offsite digital repository for the U.S. Library of Congress.
Statista.com integrates data on over 80,000 topics from over 18,000 sources. Categorized into 21 market sectors, the platform provides direct access to quantitative data on media, business, finance, politics, and a wide variety of other areas of interest or markets.
Data sources include market research reports, such as the Ipsos Affluent Survey published annually by Ipsos Media, Simmons National Consumer Studies and Consumer Insights from Scarborough Research, as well as trade publications, scientific journals, and government databases.