A great smile! I have had this picture under my quote section for a little while and although you can't see her mouth you can tell this little one is bursting with joy! Smiles on little ones faces are just precious.
The Tetrahedral kite (top left) was developed by Alexander Graham Bell in the early century. Bell built a number of models, including the Cygnet II, with 3393 cells that carried a man aloft behind a ship.