Maps

Global Think Tanks indexes and links to more than 3.4 million reports, working papers, policy briefs, data sources, and media drawn from a curated directory of more than
24,000 think tanks, including IGOs, NGOs, and research centers across the globe.  Delivered on the Policy Commons Platform, Global Think Tanks currently provides full text coverage of more than 8,500 organizations and includes more than 55,000 rescued reports from over 500 inactive organizations.

Fire Insurance Maps online (FIMo) is an online subscription service that provides access to a collection of historical fire insurance maps.

Maps in their collection include publications by Sanborn, Perris, Hexamer, Whipple, Baist, Bromley, Hopkins and others. 

In 2014, The Library of Congress granted HIG access to scan over 500,000 maps to add to their online collection.

China and the Modern World: Diplomacy and Political Secrets provides access to records from the Political and Secret Department, the Burma Office (created as a separate entity in 1937) and the Military Department.  This collection includes: intelligence and diplomatic mission reports, correspondence, official diaries, memoranda, pamphlets, gazetteers and maps

Social Explorer database contains the entire U.S. census history as well as numerous other demographic and environmental study reports, as well as mapping tools. The website seamlessly integrates spatial and numeric data through an easy-to-use interface and makes working with socio-demographic data simple even for a novice user.

Wiley Digital Archives is a discovery platform and database that provides access to collections of historical primary resources that have been digitized from societies and archives representing knowledge, learning and scholarship in the sciences.