The HathiTrust Digital Library is the world’s largest, holding nearly 17.5 million digitized volumes from research libraries around the world. The HathiTrust Research Center, co-located here at UIUC and at Indiana U, is a gateway to an enormous, near-universal library. We will introduce text and data mining tools, which allow researchers to computationally analyze the millions of volumes of text held in the HathiTrust Digital Library.