This book tells the story of the steamship Robert J. Walker, an early coastal survey ship for the agency that would later become the National Oceanic and Atmospheric Administration (NOAA), that sank with loss of 21 crew off the coast of New Jersey in 1860. The wreck was a frequent stop for divers and anglers before it was identified by a team of researchers in 2013. Here, leaders in the documentation efforts describe the history of the ship and the archaeology of the shipwreck, emphasizing the collaborative community participation that made the project successful. James Delgado and Stephen Nagiewicz highlight the contributions of government archaeologists from NOAA as well as local divers from varying backgrounds. Although such groups are not typically known for working together, they united to achieve the shared goal of mapping and interpreting this historically significant shipwreck. Delgado and Nagiewicz show how incorporating local knowledge both improves archaeological work and empowers community members as stakeholders, inspiring residents to promote their maritime heritage. With Contributions from Vincent J. Capone, Matthew S. Lawrence, Dan Lieb, Deborah E. Marx, Lisa J. Stansbury, Peter F. Straub, and Albert E. Theberge