Manual of cardboard construction for third, fourth, and fifth grades (1902)
Kunou, C. A. (Charles A.) · Los Angeles : Los Angeles City Public Schools · leaf 53
e lines for points.Add lines for flaps of l^ at ends of rectangle.On end line of second division draw square C, and add lines^ on two sides for standards of A i/^ as in sketch.Cut with scissors on full lines.NOTE. Take care not to cut loose the square C. Do not score or fold line AB, but after… … 48
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