Chinese Americans and California
Japanese Americans and war
Hawaii and ecology
Google Books contains over 15 million scanned books. Books can be viewed in 1 of 4 ways depending on their status: full text pdf for books out of copyright or with publisher's permission; limited preview of pages (sometimes quite extensive); snippet (a few sentences that include your search terms); or no preview. Bibliographic information is provided for each book including links to reviews, author info, web references, and related books.
Use Advanced Search for best results. Try it!