These files were prepared as part of a tutorial by John S. Cooper at:

   http://www.planetz.com/using-gimp-to-create-pedal-artwork


Sources:

* Pressure gauge image:
  Air_Water_Pressure_Gauge_by_FantasyStock.jpg:
  http://fantasystock.deviantart.com/art/Air-Water-Pressure-Gauge-27345816

  Posted by Fantasy Stock
  http://fantasystock.deviantart.com/

* Blue waves image:
  2dRf60W.jpg
  http://www.rgbstock.com/photo/2dRf60W/soft+background

  Posted by Jana Kollárová
  http://www.janakollarova.sk/

* BellBottom font:
  Belbott0.ttf
  http://www.urbanfonts.com/fonts/BellBottom_Laser.htm

  Posted by Iconian Fonts
  http://www.urbanfonts.com/fonts.php?fontauthor=2774
