Documenting "the struggle between Britain and America for the ownership of the region, and the further development of one of the last frontiers on the continent" is one of the primary goals of this digital collection of maps relating the history and development of the area that eventually would become Washington state. Created by a partnership between the University of Washington and Washington State University, the digital collection includes a timeline of early Washington maps that orients its users to the breadth and depth of the digital collection. There is also a drop-down menu that allows visitors to look at thumbnails of each map, organized by different themes such as forests, Puget Sound, and railroads. A general searchable index to the collection is also available for visitors looking for any number of thematic maps. The site will be of special interest to those curious about Washington state history, historical geography, and the practice of cartography over the past few centuries.