http://www.traditionaloven.com/conversions_of_measures/
http://www.exclusivelyfood.com.au/2007/04/what-does-1-cup-of-weigh.html
http://www.veg-world.com/articles/cups.htm
http://stason.org/TULARC/food/cooking/2-7-5-Weight-Volume-Conversion-Chart.html
http://chocolateandzucchini.com/archives/2006/09/conversions_equivalents.php