Here are a selection of texts of travel writings about Baltistan mostly written about a hundred years ago. They are all out of copyright so you are welcome to legally download them onto your computer. Some are quite large, so check the size first if you don't have broadband.
Adair. A Summer in High Asia (7.06 MB) View
Duncan . A summer ride through Western Tibet (10.56 MB) View
Filippi. 1909 Karakoram and Western Himalaya (40.58 MB) View
Knight. Where three empires meet (25.26 MB) View