Robert Louis Stevenson has written some absolute classic stories and he has a fasntastic clean and easy writing style. I am always going back to his novels and searching out the ones I have not read.
He of course wrote such classics as Jekyl and Hyde, Treasure Island and Catriona. All great novels and well worth the accolades given to them.
RLS has also written travel books, children's books as well as poems. I prefer his stories and novels but maybe these other genres will take your fancy. For books written so long ago, his style remains refreshing and compelling.
I am currently reading the Merry Men and Other Tales, a book that has been sitting on my shelf for years. Why didn't I pick it up ages ago, it is a wonderful read.