| Library of Congress: America’s library |
| FindLaw: Law resources |
| Google Books: Search for books (full text, summaries, or physical book locator) |
| The Labyrinth: Medieval studies |
| Hathitrust: Huge collection of digital resources from research institutions |
| Social Science Research Network: Diverse range of scholarly works to search |
| Making of America: Primary sources from US history |
| SlideFinder: Powerpoint search |
| Yovisto: Academic video search |
| Fold3: American military records |
| Findsounds: Search the web for sounds |
| Google Scholar: Academic articles from respected journals |
| E-Print Network: Energy, science and technology database |
| Plants Database: Specialized search engine devoted to, um, plants. |
| CiteULike: Social bookmarking site for scholarly references |
| BASE-BIELEFELD: Academic search |
| NY Public Library Digital Gallery: Digitalized copies of NY Public Library |
| WorldWideScience: International science database |
| Google Trends: Popularity tracker and comparison tool |
| SocialMention: Social media search and analysis |