When you find a book that is relevant to your topic, always check the bibliography for other sources and then ask a librarian for help with finding them. The author of the book has already done much of your research for you, and he/she spent many weeks/months/years of his/her life doing research. Take advantage of it!
Bai she zhuan : Lei feng ta xia de chuan qi = Madam White Snake
Bao er 宝儿
Xi you ji 西游记
Zhongguo shen hua gu shi 中国神话故事系列
中国民俗故事2= Chinese folk tales II
Search the full text of books that Google has scanned and stored in its digital database. The books come from large research university and public libraries. Full text is available for books published before 1923. For books still under copyright protection, only a small snippet of text is available.
古代文化常识
图说中国节 = Tushuo Zhongguojie
老子说 I : 智者的低语 = the Dao speaks I : the whispers of wisdom
老子说 II : 智者的低语 = the Dao speaks II : more whispers of wisdom