I really think your search is not very good. American Presidents comes up with few books on Presidents other than Obama. Don't you have books
Thanks for your feedback! I'm sorry you weren't able to find what you were looking for, but I'd be happy to help you find some additional books. A keyword search for "American Presidents" pulls up a pretty good list of results - some general histories, then books about William Henry Harrison, Lyndon Johnson, and plenty more. Was there a particular president you were looking for information on?