This is a fantastic time-saver for me. I have accounts at County of Los Angeles and Brooklyn Public Libraries. This shows me the Amazon books that both libraries have. I used to manually search either or both libraries to see if they had it to borrow - but no more ! That info is now on the Amazon page. BTW - you can get a Brooklyn library card even if you live out of state for $50 a year - a great deal for voracious readers!