While it is a bit of a comedic strip, it does provide some expansion on extended wing design. Originally had thought of opening up the centre to allow access for the pilot chute, but then thought it may be a bit too much wing disruption.
Here are some handy conversions, from F to C, from cups to teaspoons and tablespoons, and from metric to standard American. If you can't find this chart when you need it, you can also put the conversi(Easy Cake To Make)
Hand painted wood slices / Scenic Illustrations on Wood Slices by Meni Chatzipanagiotou. Granted these are painted & very beautifully done to but they would make excellent Wood Burning subjects as well.