Explore resources and tools for history and historical research.


Primary Source Databases

Published Primary Sources

Lean Library

The Lean Library Access browser extension makes it simple to access academic articles, journals and databases licensed by your library, wherever you are and whenever you need it. Install the browser extension once and enjoy a simpler, faster way to get access.

Install Extension

  • The Lean Library Access browser extension is free to all JHU users
  • It is a browser extension that needs to be installed.


For help, look for the Troubleshooting and Tips link in the sidebar.


Privacy and Data Retention

For more information on Lean Library's privacy and data retention, please refer to their Privacy Policy and Privacy FAQ with the Lean Library extension.