The Library Catalog is almost always the most useful place to start history research because:
Find Books (including Primary Sources)
Find Scholarly Articles
The quick search box searches for articles within Historical Abstracts, Academic Search Complete, and other relevant databases. Will provide indexing and links to JSTOR and Project Muse.
Tip 1: Full text in Google Scholar is limited. To link up to the library's paid resources from Google Scholar, you need to set up the library links in your preferences. Here's a brief tutorial to show you how.
Tip 2: Google Scholar works well when you have found the perfect source and you want to see who else has used that source. Here's a guide to using Google Scholar for Citation Tracking.