Early English Books Online (EEBO) features page images of almost every work printed in the British Isles and North America, as well as works in English printed elsewhere from 1470-1700.
Academic Search Ultimate offers an extensive collection of peer-reviewed journals, magazines, reports, books, and videos covering various subjects like astronomy, engineering, health, law, mathematics, and more. It's a comprehensive resource for scholars in many fields.
JSTOR is a digital library of academic journals, books, images, and primary sources.
Additional sources can be found in the library catalog under the subjects Constitutional History - United States, Constitutional Amendments - United States,and United States. Constitution. 1st-10th Amendments.
The History Department uses the citation style from the Chicago Manual of Style. The following sources document how to use this format.
The Chicago Manual of Style Online is the venerable, time-tested guide to style, usage, and grammar in an accessible online format.