I recently received these pictures of my Nephew operating his John Deere Combine (Harvestor) as he completed the final field of the 2010 Corn Harvest. Of course the next day he was in the fields doing the preparation work for the 2011 Corn Crop.
This is a view of the holding bin, the corn dryer and the bins which then hold the dry corn before it is shipped to a grain dealer or transported to the Barge Terminal in Clayton, Iowa for further shippment to various processors and even to countries around the World. Corn from the Corn Belt is shipped world-wide. 
Now, before the crop is harvested or combined by a Harvestor this young Iowa Tractor Boy is fueling the equipment in preparation for a long day in the field.
Fueling of the tractors which pull the wagons loaded with moist corn to the Dryer displayed above is also completed before the long harvest days are started.
More fueling in progress. As a former Iowa Tractor Boy I can appreciate what our Farmers expend in funds to purchase fuel to plant, grow and harvest our food stuffs.
This fleet of Wagons is necessary to transport the freshly harvested corn to the dryer. Most Iowa Tractor Boys empty the holding bin on their Harvestors while still harvesting the crop in the field. This is often referred to "Unloading on the Go," and saves precious time when it is necessary to get the harvest completed prior to Winter Winds and Fall Rains which cause the corn to fall down (I believe the official term is lodging) or the fields become to wet and soft to allow the heavy machines to operate without excessive soil compaction.
This is a scene showing the soybean harvest off of Kale Avenue near Guttenberg, Iowa. Note the gentle rolling hills with many valleys which ultimately reach the Mississippi River. 
