Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations. It is also very useful for seeing if other scholars have cited a book, article, etc. Search on the title, and then follow the "Cited by ..." link.
Index of literature covering the history and culture of the United States and Canada, from prehistory to the present. The database indexes journals from 1964 to present and includes citations and links to book and media reviews.
Covers a broad range of related subjects, from fine, decorative and commercial art, to various areas of architecture and architectural design. This database features full-text articles as well as detailed indexing and abstracts for an array of journals, books, podcasts and more. International in scope, Art Source includes periodicals published in French, Italian, German, Spanish and Dutch and is designed for use by a diverse audience, including art scholars, artists, designers, students and general researchers.
Each of these databases allows you to search for sources (including journal articles, book chapters, and more) from sources in a more specific area of study (for instance, gender studies or United States history).