This link allows you to search all five AAS series at one time, providing access to fulltext from over 8,500 journals published between 1691 and 1877 from the collection at the American Antiquarian Society, covering all aspects of American society during this time period.
"The United States Congressional Serial Set is considered an essential publication for unveiling American history. Spanning more than two centuries with more than 17,000 bound volumes, the Serial Set includes House and Senate reports, documents, and more."
use these to start your research journal
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remember to limit to peer-reviewed articles
keep track of your searches in your research journal; note what works and what doesn't
note possible resources
review bibliographies and reference lists of books & articles you find for additional sources