This page recommends sources likely to be of particular use for HIS 120: Decade of Decision, 1780s. This is not a complete list; similar books might be found nearby under similar call numbers, or with a search in the online catalog.
These books will be found in several different places. The call numbers organize books by their subject matter, but aren't enough by themselves to tell you in what part of the library you'll find the item.
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Find facts, definitions, overviews and other reference information.
Works on states of the country in general can be looked up in the online catalog with the subject U.S. States. Individual states can be searched by name; it might be particularly useful to add the word "history" as well, for example Florida History.