Lot of 2 books about making paper airplanes. Both are in very good pre-owned condition. 

1- GREAT PAPER AIRPLANES: Fabulous Planes to Fold and Fly. 2002 edition published by Barnes & Noble. 84 pages.

2- PAPER AIRPLANES ON THE FLIP SIDE: 77 Fold-and-Fly Projects for your Inner Aviator, includes project papers in 6 bold colors. Published in 2006 by Sterling Publishing. (Paper is still there and unused)