I love the Landmark History books that I have been able to find. I went looking for a chronological list of them, and found two bloggers that have already done the work. Each list is divided slightly differently, but all the books are there as far as I can tell. One list is divided by years, the other list is divided by eras, and I could see each being very helpful.
From Pics & Papers
From Cheryl Bastian
Want a way to keep track of the books you want to read aloud to your family? Use the Read Aloud Checklist page in the Project Inspire Home Education Record Keeper.