You might want to consider Thomas Jefferson, Benjamin Franklin or Teddy Roosevelt. All were writers who read prodigiously and widely and left behind massive libraries. Mortimer Adler, author of How to Read a Book (I highly recommend it) isn't well read now, but was a giant in his day and read probably more than even the other wide reading scholars of his day. Just a few to consider. I think of the history I read by so many authors and their bibliographies are mind blowing.