A good starting place, encyclopedias can provide general background information and may suggest directions for research.
Oxford Encyclopedia of American Social History
Search for books, ebooks, and video documentaries on inventors and inventions:
The databases below include articles from scholarly journals and professional magazines.
Subjects: History, Literature, Sociology, Psychology, Political Science, Biology, Chemistry, Physics, Mathematics. Art.
Multidisciplinary index to peer-reviewed journal and magazine articles; some full-text; constructs bibliography in five different citation styles.
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