Manual of cardboard construction for third and fourth grades (1902)
Kunou, Charles A. [from old catalog] · [Los Angeles?] · leaf 65
/2 from each side of outside square and drawoblique lines to angles of inside square as shown indrawing. Draw triangles A, B, C, D, % altitude. Note points ofconnection. Cut out figure following the full outline. Score on dashed lines in the corners and on the lines ofinner square. Fold sides… … 64
Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.