The follow resources will have you identify books related to your theme or culture. Most either have a list organized by theme, or have a search filter that allows you to refine the titles by culture/theme.
As you are choosing your titles, you might want to learn more about an author and their background. Below are some library resources that contain biographies. If your author is a new writer, or hasn't published much, you may not find information on them, but these resources are a good place to start.
Additional places to look could be the author's website or the publisher's website. A simple web search of the author's name may also help you find interviews, speaking events, social media profiles or other material to help you learn more about them.