This section is from the "The American Girl's Home Book of Work And Play" book, by Helen Campbell. Amazon: The American girl's home book of work and play.
To make a paper boat, make first the cocked hat, and then continue folding according to following directions : I. The lines C D, C E, D E, and O P, having been folded, fold along the line C F, and open out the creases C D and
C E, thus forming a square C D F G; the corner opposite F being lettered G.

Fig 15 —Boat before folding.
II. Fold back the corners D and E until they touch the corner C, making a triangle CFG.
III. Flatten the creases C F and C G, bringing the corners F and G together, forming a new square. The corners D and E still touch the corner C ; draw them out laterally, and the paper assumes the shape of a boat. A match may be put in the centre fold for mast, first running it through a bit of paper for sail; and a fleet of these little boats filled with paper sailors can be navigated either in wash-bowl' or bath-tub.

Fig. 16. — Paper Boat as folded
 
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