Hali Felt, author of “Soundings: the Story of the Remarkable Woman Who Mapped the Ocean Floor," reads from and discusses the book at 4:00 p.m. Hear about the fascinating life of Michigan alumna and Ypsilanti native, Marie Tharp, whose work led to the acceptance of the theories of plate tectonics and continental drift. After the presentation, explore samples of Tharp’s work and the exhibit "The Student Experience: Flappers, Mappers, and the Fight for Equality on Campus," which features Marie Tharp.

Third Thursday is a monthly open house that showcases the highlights of the Clark Library’s vast collection. These fun, thematic events are open to everyone, offering the community a look at some of our favorite maps and other materials.