Do you like to hike or travel? Want to learn where the waterfall hot spots are throughout New England? Want to discover the best waterfalls near Tewksbury? Greg Parsons, author of "New England Waterfalls: A Guide To More Than 500 Cascades and Waterfalls," will discuss all things New England waterfalls, give you the definitive must-sees, and share some of his beautiful photogrpahy. Parsons is a native New Englander who has been discovering new waterfalls and updating his popular guide for 15 years. A book signing will take place after the presentation for those interested. Sponsored by the Friends of the Library.