National Geographic : 1951 Jul
69 Hamilton River Drains a Pulpwood Reserve Unknown to the Woodsman's Ax Canoeing unspoiled lakes and streams, the authors invaded the primeval realm of the loon, otter, and trout. From Astray Lake to North West River they paddled and portaged 600 miles. For the first 31 days they met no other men. To see Unknown Falls they made a 200-mile side trip from Sandgirt Lake (left).