Alexander Caulfield Anderson was a British Hudson's Bay Company (HBC) fur-trader, explorer of British Columbia and civil servant.

Fort Nisqually was an important fur trading and farming post of the Hudson's Bay Company in the Puget Sound area, part of the Hudson's Bay Company's Columbia Department. It was located in what is now DuPont, Washington. Today it is a living history museum located in Tacoma, Washington, USA, within the boundaries of Point Defiance Park. The Fort Nisqually Granary, moved along with the Factor's House from the original site of the second fort to this park, is a U.S. National Historic Landmark. Built in 1843, the granary is the oldest building in Washington state and one of the only surviving examples of a Hudson's Bay Company "post-and-plank" structure. The Factor's House and the granary are the only surviving Hudson's Bay Company buildings in the United States.