The Library Catalog lists all of the books, including ebooks, owned by the Library. You can limit your search to ebooks by going into Advanced Search and clicking the "Available Online" box below the search boxes.
The Library Catalog also includes books that are primary sources. If you want secondary sources, try sorting your search results by newest first.
The catalog is not always the easiest thing to search. Please email me if you're not finding what you need, or try some of these tips.
You might need to search variants of a word, or use synonyms; for example, I sometimes use "medieval" or "middle ages" or "England" or "Great Britain." Searching for specific time periods can also be tricky. You might need to do a broad search and then skim through the results.
Use a country or city name as a subject to narrow your results immediately. You can also use "history" or "women" as subjects. Be sure to combine these searches with other words, though.
The advanced search defaults to searching specific fields. Make sure to change the dropdowns to "all fields" unless you want something more specific.
You can also narrow your results after you search using the menu of the left side.