c1902  (1912)  In this case he uses the abuckwan--canvas--for a shed tent, with one side sloping to the ground, banked by brush and snow, the other facing the fire, both tent and fire on such a slope that the smoke drifts out while the heat reflects in.
1849  I accordingly got three sheds of striped ticking made to put up to windward, the two for the men (five men in each shed) were twelve feet long, ten broad, and seven deep, the sides were made by cutting a square of seven feet ticking diagonally, each half or right angle triangle forming a side for the shed, which was supported on two forked poles, or "crutches," seven feet high and a ridge pole resting on them, which with four or five other poles, which rested slanting on the ridge pole, were cut every day, the thick layer of fir twigs, laid upside down for softness, forming the carpet of the shed.
1913  Because of the storm, shed-tents had been set up, and the men were gathered under them for the night.