It is based on the Public Land Survey System (PLSS) grid
" this is the earliest National Geographic map of "The Land Down Under
This is a colorful map from Johnson's Atlas showing great detail of Russia
IMPORTANT NOTE:
Tidal information
Reconnaissance of The Western Coast of The United States, Northern Sheet, From Umpquah River to The Boundary Australia It is based on theA very nice chart of the northwest part of Washington State. Depicts the coast from Vancouver Island in the north, through the Straits of Juan de Fuca, south to Umpquah River. This chart has eight beautiful elevation views of coastal landmarks: ' Entrance to Columbia River, Cape Disappointment,'' Duncan's Island, Tahtoosh Island, Cape Flattery,' 'Flattery Rocks,' 'Destruction Island,' 'Sail Rock, Pt. Grenville', 'Tillamook Head', 'Cape Lookout', and