"Any of the books from the Redwall series written by the late great Brian Jaques would make a great comic book.  I immediately thought of Redwall when I read Mouse Guard.  I would love to read "the long patrol" or "salamandastron" or "Redwall" in comic format. "

Amen! This would make a great comic.

1. Hemingway- I think his minimalist style would have been great, and 'The Undefeated' would make a great comic.

2. John Swift- Gulliver's Travels

3. Goethe- Faust!

4. Aldous Huxley- Brave New World

5. A. Merritt- The Metal Monster

6. Rafael Sabatini- Captain Blood

These are all pretty much either in the Gothic or R.L Stevenson traditions, but they are great early writers (most of them... not Hemingway) of sci-fi or horror and they would have made great graphic novels.

C.S. Lewis  - Chronicles of Narnia

" Actually I might wish to make a small correction because in a way comics DID in fact exist before and even immediately after 1900.  They didn't take the exact panel/text form that modern day comics do but the similarities between them and today's are downright striking.  They were referred to as dime novels and covered wide ranges of subjects from humor to adventure.   
 
Here are some examples:  
 
    
 
    
 
     Many are quick to point out that many of these were just like true novels and had maybe a colorful cover and then just text in the body, but that's not true, for many of them did have illustrations peppered throughout the text.  Sure, the ratio of art/text isn't like modern day comics...but I think dime novels like these are worthy ancestors. "

What is this "Era before comics" you speak of? ;P
 

Any of the books from the Redwall series written by the late great Brian Jaques would make a great comic book.  I immediately thought of Redwall when I read Mouse Guard.  I would love to read "the long patrol" or "salamandastron" or "Redwall" in comic format.

Robert Louis Stevenson.  
@SC said:

" Matthew from the Gospel of Matthew. Whales are great material for comics. I also suspect he may have invented and executed the first Hero VS Shark fight example as well.  "

The first actual comic book was called "the Adventures of Obadiah Oldbuck" and it was printed in 1842

Actually I might wish to make a small correction because in a way comics DID in fact exist before and even immediately after 1900.  They didn't take the exact panel/text form that modern day comics do but the similarities between them and today's are downright striking.  They were referred to as dime novels and covered wide ranges of subjects from humor to adventure.   
 
Here are some examples:  
 
    
 
    
 
    
 
Many are quick to point out that many of these were just like true novels and had maybe a colorful cover and then just text in the body, but that's not true, for many of them did have illustrations peppered throughout the text.  Sure, the ratio of art/text isn't like modern day comics...but I think dime novels like these are worthy ancestors.

Matthew from the Gospel of Matthew. Whales are great material for comics. I also suspect he may have invented and executed the first Hero VS Shark fight example as well. 

Lewis Carroll, particularly with John Tenniel's art, would be pretty good I think. Whether it was a comic version Alice's Adventures in Wonderland or Through the Looking-Glass and What Alice Found There, or something new, I think the pair would have been able to make some pretty interesting works.
 
I could see Herman Melville, likely lots of action and adventure, and maybe Nathaniel Hawthorne, likely more gritty and introspective, working well also.

Shakespeare would have been great. Macbeth would go really well as a Graphic Novel (and probably wouldn't be as long).