Sigurd F. Olson was for more than thirty years a wilderness guide in the quetico-superior country, and no one knew with the same intimacy the mysteries of the lakes and forests of that magnificent primitive area. To the ...Sigurd F. Olson was for more than thirty years a wilderness guide in the quetico-superior country, and no one knew with the same intimacy the mysteries of the lakes and forests of that magnificent primitive area. To the many out-of-doorsmen who canoed and portaged with him through this wilderness, he was known honorifically as the bourgeois--as the voyageurs of old called Sigurd f.