Finding book reviews in databases
America: History and Live/Historical Abstracts and JSTOR both allow you to limit to reviews. In both databases, you need to do this on the advanced search screen BEFORE you search. You can't limit to reviews in either after you search.
America: History and Life and Historical Abstracts
On the advanced search screen, scroll down to see the options below the search boxes. Find Publication Type. Review is the last option on the list.

JSTOR
In JSTOR, scroll down until you see the Narrow Results option and select Reviews.
