Manual of cardboard construction for third and fourth grades (1902)
Kunou, Charles A. [from old catalog] · [Los Angeles?] · leaf 23
ines, completing a square, stand-ing on its diagonal. AVith triangles draw lines x, x, 4 long at right angles tothe horizontal diagonal. Draw the base line parallel to the horizontal diagonal andthrough the extremity of the vertical. Draw flap lines i/o below base line. Make ends of flaps oblique… … 22
Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
