Good post.
I have all but 7 of those books. The only early edition I have is Black Beauty.
My Grandfather received the Black Beauty book as a gift from a teacher in 1910 (If I remember correctly). I will have to look and see when it was printed and when the teacher presented it to him. She wrote a short note to him and signed and dated it. I'm curious now.
The only first edition I can find of Lonesome Dove is $100, so looks like I'll be saving my pennies.
There is also one book that is purely sentimental I plan on ordering my Mom for Christmas. But once again, it's $300 so my pennies are being pinched. LOL