Types
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- Articles74
- Full-Text Resources56
- Archives and Primary Sources33
- Digital Collections and Repositories29
- Books, Ebooks, and Book Reviews23
- Newspapers16
- General and Multi-disciplinary Resources15
- Images, Maps, & Flags13
- Quick Facts and Reference12
- Biographies9
- Multimedia9
- People5
- Dissertations and Theses4
- Government Document Catalogs4
- Historical Newspapers4
- Search Engines and Web Sites4
- Encyclopedias3
- Historical Images3
- Historical Maps3
- Statistics and Datasets3