sentences:  After managing the fur trade at Fort McPherson, he returned to the Bell River, and followed the Porcupine to its juncture with Yukon River, the eventual site of Fort Yukon.Soon after, Alexander Hunter Murray established trading posts at Lapierre House (1846) and at Fort Yukon (1847) at the juncture of the Porcupine and Yukon Rivers.Murray drew numerous sketches of fur trade posts and of people and wrote the "Journal of Yukon, 1847–48", which give valuable insight into the culture of local Gwich’in First Nation people at the time.