On the Alaska-Canada boundary, 7 mi NW of Mount John Jay, 29 mi. NW of Hyder, Coast Mts.
Named in 1927 for Willibert Simpson Canadian International Boundary Commission (IBC) surveyor.
Chickamin Glacier, Clara Smith Glacier, Gracey Creek Glacier,
Lakes:Disappearing Lake, Smith Lake, Texas Lake,
Mountains:Mount Blaine, Mount John Jay, Mount Middleton, Mount Upshur, Mount Willibert, Mount Wilson,
Streams: