Bringing to life an era when rivers, lakes, and oceans were the nation's highways and lighthouses served as traffic signals and maps, this comprehensive reference provides children with an in-depth history of lighthouses and firsthand stories of the challenges faced by lighthouse keepers. Filled with engaging activities such as learning how to tie a bowline knot and building a model lighthouse, this unique book also includes a field guide to U.S. lighthouses, places to visit, a time line, glossary, websites to explore, and a reading list for further study.