Use the advanced search and click on the icon next to the "document type" field, which allows you to add "book review" to your search. Note: Historical Abstracts, the companion database to America: History & Life, does not include individual book reviews, only lengthier review essays (which you can isolate by including the word "review" in the "subject" field).
Print predecessor Writings on American History covering 1904-1954 is in Firestone's General & Humanities Reference (DR) Z1236.L331.
Do a keyword search for your title or author. Then, from the list display, click on "limit" and select "form/genre." Select "book review" and click on "apply limit." This database replaces the printed ISIS Cumulative Bibliography.
Use the advanced search and pull the "type" menu down to "review." Note: the most comprehensive index in the field of medieval studies, the International Medieval Bibliography (IMB), does not include book reviews