Not many people reside in the Northwest Angle, that region on Minnesota's northern border that looks like a slip of the map-maker's pen. But for 57 years, the folks who do live there relied on Don Hanson to get them their mail. That ended a couple of weeks ago when the 86-year-old Hanson hung up his mail bag. Hanson started his run from Warroad to the Angle and the tiny outpost of Angle Inlet before there were roads to get him there. Over the years, he's made the mail run by bush plane, boat, even snowmobile. Despite the remote route, he says his duties weren't all that remarkable.