Title: Mackenzie, Selkirk, Simpson
Subjects: Discovery and exploration, History, Fur trade, Histoire
Places: Canadian Northwest
People: Alexander Mackenzie Sir (1763-1820), Alexander Mackenzie Sir (1764-1820), George Simpson Sir (1786 or 7-1860), George Simpson Sir (1792?-1860), James Douglas (1803-1877), Thomas Douglas Selkirk Earl of (1771-1820)