History of Medicine The National Library of Medicine (NLM) holds approximately 2,000 volumes of Chinese medical classics. Here we display a few of the earliest and most interesting texts from the NLM collection. Also included are portraits of a few significant figures in early Chinese medicine whose contributions range from acupuncture to the pioneering uses of herbal medicines to the concept of Yin and Yang. Through the exhibit, we hoped to draw attention to a fascinating part of NLM's historical resources. 23 October 2009