Source: Sad News: Harper Lee, author of To Kill a Mockingbird has died aged 89
See book reviews on her most famous book: To Kill a Mockingbird
https://www.goodreads.com/book/show/2657.To_Kill_a_Mockingbird
https://www.theguardian.com/books/2013/oct/17/review-to-kill-a-mockingbird-harper-lee
http://www.theatlantic.com/past/unbound/classrev/mocking.htm
http://classiclit.about.com/od/tokillamockingbird/fr/aa_tokill.htm
http://teacher.scholastic.com/writewit/bookrev/read.htm
