This section is from the book "Box Furniture", by Louise Brigham. Also available from Amazon: Box Furniture.

Body. 3 Bottled-bean Boxes (about 7 3/4 in. deep, 11 3/4 in. wide, 12 3/4 in. long).
Legs. 4 Strips 3/8 in. thick, 11/8 in. wide, 36 in. long. 4 Strips 3/8 in. thick, 1 1/2 in. wide, 36 in. long.
Make the legs 36 inches long. Remove the covers. Turn one box on its side and nail on two of the legs, allowing one end of each to project 4 inches from the bottom face of the box. Place the second box on its side, with its open top facing in the same direction as the open top of the first box, and nail the other end of the legs to it, keeping their ends even with the open-top edges of the box. Set the third box between the two end boxes, evenly spaced, and nail the legs to it. Turn the three boxes upside down and nail the other legs on in the same manner.
 
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