Harper published notable works on the caribou of Keewatin , the birds of the Ungava Peninsula , and the Montagnais of the Ungava .
He returned to Athabasca in 1920 , Nueltin Lake in southern Keewatin in 1947 and the Ungava Peninsula in 1953 , his last trip north .
Harper published notable works on the caribou of Keewatin , the birds of the Ungava Peninsula , and the Montagnais of the Ungava Peninsula .
He returned to Athabasca in 1920 , Nueltin Lake in southern Keewatin in 1947 and the Ungava Peninsula in 1953 , his last trip north .