Lots of really old books scanned in, link is to a folklore search:
http://www.archive.org/search.php?query=folklore%20AND%20mediatype%3Atexts
Here is a search on Tibetan:
http://www.archive.org/search.php?query=tibetan%20AND%20mediatype%3Atexts
Things like:
Tibetan-English Folktales
This illustrated bilingual (English and Tibetan) lower intermediate level textbook consists of 65 lessons. Each lesson has a vocabulary list and a Tibetan folktale in both English and Tibetan. Various exercises are included for each lesson. This book is very popular with Tibetan students because of their familiarity with the cultural context of the folktales.
Language Pathways: A Tibetan & English Reader (1) (The text) for the audio files go to: http://www.archive.org/details/LanguagePathwaysATibetanEnglishReader1 For volume 2 of this series, go to: http://www.archive.org/details/LanguagePathwaysATibetanEnglishReader2
Richly illustrated bilingual (English and Tibetan) intermediate level textbook featuring 40 units. Dialogues, sentence patterns, texts, common expressions, grammar points, activities, and exercises constitute each unit. The book includes an English-Tibetan word list with approximately 1,700 items. Free audio files for these stories can be found on Internet Archive, starting with the first five at http://www.archive.org/details/EnglishForTibetanSpeakers--audioFilesunits1-5Of40Units.